Fix thread update with drafts bugs.

* Fix thread not updating correctly when drafts are present.
* Fix thread delete bug during first message drafting.

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

@@ -48,8 +48,8 @@ class DraftRepository(
         draftDatabase.replaceDrafts(actualThreadId, drafts)
         threadDatabase.updateSnippet(actualThreadId, drafts.getSnippet(context), drafts.uriSnippet, System.currentTimeMillis(), MmsSmsColumns.Types.BASE_DRAFT_TYPE, true)
       } else if (threadId > 0) {
-        threadDatabase.update(threadId, false)
         draftDatabase.clearDrafts(threadId)
+        threadDatabase.update(threadId, unarchive = false, allowDeletion = false)
       }
     }
   }

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

@@ -110,7 +110,7 @@ class DraftViewModel @JvmOverloads constructor(
     return repository
       .loadDrafts(threadId)
       .doOnSuccess { drafts ->
-        store.update { it.copyAndSetDrafts(threadId, drafts.drafts) }
+        store.update { saveDrafts(it.copyAndSetDrafts(threadId, drafts.drafts)) }
       }
       .observeOn(AndroidSchedulers.mainThread())
   }

app/src/main/java/org/thoughtcrime/securesms/database/ThreadDatabase.kt

@@ -1327,6 +1327,17 @@ class ThreadDatabase(context: Context, databaseHelper: SignalDatabase) : Databas
       return true
     }
 
+    val drafts: DraftDatabase.Drafts = SignalDatabase.drafts.getDrafts(threadId)
+    if (drafts.isNotEmpty()) {
+      val threadRecord: ThreadRecord? = getThreadRecord(threadId)
+      if (threadRecord != null &&
+        threadRecord.type == MmsSmsColumns.Types.BASE_DRAFT_TYPE &&
+        threadRecord.date > record.timestamp
+      ) {
+        return false
+      }
+    }
+
     updateThread(
       threadId = threadId,
       meaningfulMessages = meaningfulMessages,