Guard bubble inset request against detached view.

Co-authored-by: Greyson Parrelli <greyson@signal.org>

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationFragment.kt

@@ -655,10 +655,12 @@ class ConversationFragment :
     if (args.conversationScreenType == ConversationScreenType.BUBBLE) {
       binding.root.setNavigationBarInsetOverride(0)
       view.post {
+        if (view.isAttachedToWindow) {
           ViewCompat.requestApplyInsets(binding.root)
           binding.root.requestLayout()
         }
       }
+    }
 
     disposables.bindTo(viewLifecycleOwner)