🐛 Make sure the send read event triggered before dispose chat message controller

lib/controllers/chat_message_controller.dart

@@ -514,6 +514,11 @@ class ChatMessageController extends ChangeNotifier {
     }
 
     _readEventDebounce = Timer(const Duration(milliseconds: 500), () {
+      _sendReadEvent();
+    });
+  }
+
+  void _sendReadEvent() {
     _ws.conn?.sink.add(jsonEncode(
       WebSocketPackage(
         method: 'events.read',
@@ -525,12 +530,14 @@ class ChatMessageController extends ChangeNotifier {
       ).toJson(),
     ));
     log('[Messaging] Send read event request: $_readEventAnchor');
-    });
   }
 
   @override
   void dispose() {
     _wsSubscription?.cancel();
+    if (_readEventDebounce?.isActive ?? false) {
+      _sendReadEvent();
+    }
     _readEventDebounce?.cancel();
     super.dispose();
   }