Use a helper to avoid using media/ asset prefixes (#28756)

app/views/user_mailer/appeal_approved.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('user_mailer.appeal_approved.title'), heading_subtitle: t('user_mailer.appeal_approved.subtitle'), heading_image_url: full_pack_url('media/images/mailer-new/heading/appeal-approved.png')
+  = render 'application/mailer/heading', heading_title: t('user_mailer.appeal_approved.title'), heading_subtitle: t('user_mailer.appeal_approved.subtitle'), heading_image_url: frontend_asset_url('images/mailer-new/heading/appeal-approved.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/appeal_rejected.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('user_mailer.appeal_rejected.title'), heading_subtitle: t('user_mailer.appeal_rejected.subtitle'), heading_image_url: full_pack_url('media/images/mailer-new/heading/appeal-rejected.png')
+  = render 'application/mailer/heading', heading_title: t('user_mailer.appeal_rejected.title'), heading_subtitle: t('user_mailer.appeal_rejected.subtitle'), heading_image_url: frontend_asset_url('images/mailer-new/heading/appeal-rejected.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/backup_ready.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('user_mailer.backup_ready.title'), heading_subtitle: t('user_mailer.backup_ready.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/archive.png')
+  = render 'application/mailer/heading', heading_title: t('user_mailer.backup_ready.title'), heading_subtitle: t('user_mailer.backup_ready.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/archive.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/confirmation_instructions.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.confirmation_instructions.title'), heading_image_url: full_pack_url('media/images/mailer-new/heading/email.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.confirmation_instructions.title'), heading_image_url: frontend_asset_url('images/mailer-new/heading/email.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/email_changed.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.email_changed.title'), heading_subtitle: t('devise.mailer.email_changed.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/email.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.email_changed.title'), heading_subtitle: t('devise.mailer.email_changed.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/email.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/password_change.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.password_change.title'), heading_subtitle: t('devise.mailer.password_change.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/password.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.password_change.title'), heading_subtitle: t('devise.mailer.password_change.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/password.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/reconfirmation_instructions.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.reconfirmation_instructions.title'), heading_image_url: full_pack_url('media/images/mailer-new/heading/email.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.reconfirmation_instructions.title'), heading_image_url: frontend_asset_url('images/mailer-new/heading/email.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/reset_password_instructions.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.reset_password_instructions.title'), heading_subtitle: t('devise.mailer.reset_password_instructions.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/password.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.reset_password_instructions.title'), heading_subtitle: t('devise.mailer.reset_password_instructions.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/password.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/suspicious_sign_in.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('user_mailer.suspicious_sign_in.title'), heading_subtitle: t('user_mailer.suspicious_sign_in.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/login.png')
+  = render 'application/mailer/heading', heading_title: t('user_mailer.suspicious_sign_in.title'), heading_subtitle: t('user_mailer.suspicious_sign_in.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/login.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/two_factor_disabled.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.two_factor_disabled.title'), heading_subtitle: t('devise.mailer.two_factor_disabled.subtitle'), heading_image_url: full_pack_url('media/images/mailer-new/heading/2fa-disabled.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.two_factor_disabled.title'), heading_subtitle: t('devise.mailer.two_factor_disabled.subtitle'), heading_image_url: frontend_asset_url('images/mailer-new/heading/2fa-disabled.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/two_factor_enabled.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.two_factor_enabled.title'), heading_subtitle: t('devise.mailer.two_factor_enabled.subtitle'), heading_image_url: full_pack_url('media/images/mailer-new/heading/2fa-enabled.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.two_factor_enabled.title'), heading_subtitle: t('devise.mailer.two_factor_enabled.subtitle'), heading_image_url: frontend_asset_url('images/mailer-new/heading/2fa-enabled.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/two_factor_recovery_codes_changed.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.two_factor_recovery_codes_changed.title'), heading_subtitle: t('devise.mailer.two_factor_recovery_codes_changed.subtitle'), heading_image_url: full_pack_url('media/images/mailer-new/heading/2fa-recovery.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.two_factor_recovery_codes_changed.title'), heading_subtitle: t('devise.mailer.two_factor_recovery_codes_changed.subtitle'), heading_image_url: frontend_asset_url('images/mailer-new/heading/2fa-recovery.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/warning.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t("user_mailer.warning.title.#{@warning.action}"), heading_image_url: full_pack_url('media/images/mailer-new/heading/warning.png')
+  = render 'application/mailer/heading', heading_title: t("user_mailer.warning.title.#{@warning.action}"), heading_image_url: frontend_asset_url('images/mailer-new/heading/warning.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/webauthn_credential_added.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_credential.added.title'), heading_subtitle: t('devise.mailer.webauthn_credential.added.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/key-added.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_credential.added.title'), heading_subtitle: t('devise.mailer.webauthn_credential.added.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/key-added.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/webauthn_credential_deleted.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_credential.deleted.title'), heading_subtitle: t('devise.mailer.webauthn_credential.deleted.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/key-deleted.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_credential.deleted.title'), heading_subtitle: t('devise.mailer.webauthn_credential.deleted.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/key-deleted.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/webauthn_disabled.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_disabled.title'), heading_subtitle: t('devise.mailer.webauthn_disabled.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/key-disabled.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_disabled.title'), heading_subtitle: t('devise.mailer.webauthn_disabled.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/key-disabled.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td

app/views/user_mailer/webauthn_enabled.html.haml

@@ -1,5 +1,5 @@
 = content_for :heading do
-  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_enabled.title'), heading_subtitle: t('devise.mailer.webauthn_enabled.explanation'), heading_image_url: full_pack_url('media/images/mailer-new/heading/key-enabled.png')
+  = render 'application/mailer/heading', heading_title: t('devise.mailer.webauthn_enabled.title'), heading_subtitle: t('devise.mailer.webauthn_enabled.explanation'), heading_image_url: frontend_asset_url('images/mailer-new/heading/key-enabled.png')
 %table.email-w-full{ cellspacing: 0, cellpadding: 0, border: 0, role: 'presentation' }
   %tr
     %td.email-body-padding-td