Dialog notifying user of failure when media upload fails (#3135)

* First attempt at user notifications of failure when media upload fails

* Drafts alert displays alert

* ktLint

* Fix defaced 46.json, add 47.json

* Mock draftsNeedUserAlert in MainActivityTest to prevent spurious failure

* Friendlier posts-failed message

* Create DraftsAlert object

* DraftsAlert works

* Not the cleanest, but DraftsAlert works with multiple accounts

* Use plural strings

* KtLint

* Clean up debug prints

* Simplify DraftsAlert per Conny suggestions

* Text change suggested by Conny

* ktLint again

* Back out test changes

* Fix MainActivityTest for new approach

* Tweak debug log

* Do not use GlobalScope for coroutines

app/src/main/java/com/keylesspalace/tusky/components/account/AccountActivity.kt

@@ -61,6 +61,7 @@ import com.keylesspalace.tusky.components.compose.ComposeActivity
 import com.keylesspalace.tusky.components.report.ReportActivity
 import com.keylesspalace.tusky.databinding.ActivityAccountBinding
 import com.keylesspalace.tusky.db.AccountEntity
+import com.keylesspalace.tusky.db.DraftsAlert
 import com.keylesspalace.tusky.di.ViewModelFactory
 import com.keylesspalace.tusky.entity.Account
 import com.keylesspalace.tusky.entity.Relationship
@@ -99,6 +100,8 @@ class AccountActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidI
     lateinit var dispatchingAndroidInjector: DispatchingAndroidInjector<Any>
     @Inject
     lateinit var viewModelFactory: ViewModelFactory
+    @Inject
+    lateinit var draftsAlert: DraftsAlert
 
     private val viewModel: AccountViewModel by viewModels { viewModelFactory }
 
@@ -386,6 +389,9 @@ class AccountActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidI
         viewModel.noteSaved.observe(this) {
             binding.saveNoteInfo.visible(it, View.INVISIBLE)
         }
+
+        // "Post failed" dialog should display in this activity
+        draftsAlert.observeInContext(this, true)
     }
 
     /**