fix mqtt set clear

lib/main_page.dart

@@ -120,6 +120,10 @@ class _MainPageState extends State<MainPage> {
     if (jsonObject == "ok") {
       context.read<ReadyCubit>().getData();
       context.read<QueueCubit>().getData();
+      final pubTopic = queueTopic;
+      final builder = MqttClientPayloadBuilder();
+      builder.addString(queueMessage);
+      mqClient.publishMessage(pubTopic, MqttQos.exactlyOnce, builder.payload!);
     } else {
       print("gabisa");
     }
@@ -305,7 +309,7 @@ class _MainPageState extends State<MainPage> {
                     // ),
                     InkWell(
                       onTap: () {
-                        print("clear");
+                        // print("clear");
                         showDialog(
                           context: context,
                           builder: (BuildContext context) => AlertDialog(