Fix draft edit messages not being cleared.

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationParentFragment.java

@@ -4170,6 +4170,7 @@ public class ConversationParentFragment extends Fragment
   @Override
   public void onExitEditMode() {
     updateToggleButtonState();
+    draftViewModel.deleteMessageEditDraft();
   }
 
   @Override

app/src/main/java/org/thoughtcrime/securesms/conversation/drafts/DraftViewModel.kt

@@ -84,6 +84,12 @@ class DraftViewModel @JvmOverloads constructor(
     }
   }
 
+  fun deleteMessageEditDraft() {
+    store.update {
+      saveDrafts(it.copy(textDraft = null, bodyRangesDraft = null, messageEditDraft = null))
+    }
+  }
+
   fun setTextDraft(text: String, mentions: List<Mention>, styleBodyRanges: BodyRangeList?) {
     store.update {
       val mentionRanges: BodyRangeList? = MentionUtil.mentionsToBodyRangeList(mentions)