Fixed wrong chat-count in Notification

lib/notification/notificationController.dart

@@ -24,7 +24,7 @@ class NotificationController {
           ),
         ).run().then((value) {
           var messageCount = value.data.map((e) => e.unreadMessages).reduce((a, b) => a + b);
-          var chatCount = value.data.map((e) => e.unreadMessages).length;
+          var chatCount = value.data.where((e) => e.unreadMessages > 0).length;
           var people = value.data.where((e) => e.unreadMessages > 0).map((e) => e.displayName.split(" ")[0]);
 
           final NotificationService service = NotificationService();