add more options to default reply visibility setting (#4568)

This adds `direct` and `match_default_post_visibility` as options to the
default reply visibility setting. `match_default_post_visibility` will
be the default for new accounts.

closes https://github.com/tuskyapp/Tusky/issues/4555

<img
src="https://github.com/user-attachments/assets/b256ff32-cd49-4274-903b-96da96451e0e"
width="320"/>

app/src/main/java/com/keylesspalace/tusky/receiver/SendStatusBroadcastReceiver.kt

@@ -93,7 +93,7 @@ class SendStatusBroadcastReceiver : BroadcastReceiver() {
                     StatusToSend(
                         text = text,
                         warningText = spoiler,
-                        visibility = visibility.serverString,
+                        visibility = visibility.stringValue,
                         sensitive = false,
                         media = emptyList(),
                         scheduledAt = null,