include sequence number in fake messages

Signal/src/ViewControllers/DebugUI/DebugUIMessages.m

@@ -3747,7 +3747,7 @@ typedef OWSContact * (^OWSContactBlock)(YapDatabaseReadWriteTransaction *transac
     OWSLogInfo(@"sendFakeMessages: %lu", (unsigned long)counter);
 
     for (NSUInteger i = 0; i < counter; i++) {
-        NSString *randomText = [self randomText];
+        NSString *randomText = [[self randomText] stringByAppendingFormat:@" (sequence: %lu)", (unsigned long)i + 1];
         switch (arc4random_uniform(isTextOnly ? 2 : 4)) {
             case 0: {
                 TSIncomingMessage *message =