Prevent unnecessary api request for chats

lib/model/chatList/chatProps.dart

@@ -18,6 +18,7 @@ class ChatProps extends DataHolder {
   @override
   void run() {
     notifyListeners();
+    if(_queryToken.isEmpty) return;
     DateTime requestStart = DateTime.now();
 
     GetChatCache(
@@ -27,7 +28,6 @@ class ChatProps extends DataHolder {
 
         _getChatResponse = data;
         notifyListeners();
-
       }
     );
   }