Fix: re-publish tracks after re connect (#238)

* fix republish local tracks after reconnect.

* update flutter-webrtc.

* remove unused import.

* add dart_webrtc.

* cleanup.

* fix: Fix sendSyncState timing error, when reconnecting is sending.

* Adjust the re-connect logic to ensure that the publisher negotiates and reconnects correctly.

* Update room.dart

lib/src/core/room.dart

@@ -166,7 +166,8 @@ class Room extends DisposableChangeNotifier with EventsEmittable<RoomEvent> {
       }
 
       if (connectOptions.protocolVersion.index >= ProtocolVersion.v8.index &&
-          engine.fastConnectOptions != null) {
+          engine.fastConnectOptions != null &&
+          !engine.fullReconnect) {
         var options = engine.fastConnectOptions!;
 
         var audio = options.microphone;
@@ -263,7 +264,7 @@ class Room extends DisposableChangeNotifier with EventsEmittable<RoomEvent> {
     })
     ..on<SignalConnectionStateUpdatedEvent>((event) {
       // during reconnection, need to send sync state upon signal connection.
-      if (event.didReconnect) {
+      if (event.newState == ConnectionState.reconnecting) {
         logger.fine('Sending syncState');
         _sendSyncState();
       }
@@ -306,11 +307,6 @@ class Room extends DisposableChangeNotifier with EventsEmittable<RoomEvent> {
       } else if (event.fullReconnect &&
           event.newState == ConnectionState.connected) {
         events.emit(const RoomRestartedEvent());
-        // recreate signal listener.
-        await _signalListener.cancelAll();
-        await _signalListener.dispose();
-        _signalListener = engine.signalClient.createListener();
-        _setUpSignalListeners();
         await _handlePostReconnect(event.fullReconnect);
       } else if (event.newState == ConnectionState.reconnecting) {
         events.emit(const RoomReconnectingEvent());
@@ -366,10 +362,6 @@ class Room extends DisposableChangeNotifier with EventsEmittable<RoomEvent> {
     await _cleanUp();
   }
 
-  Future<void> reconnect() async {
-    await engine.restartConnection();
-  }
-
   RemoteParticipant _getOrCreateRemoteParticipant(
       String sid, lk_models.ParticipantInfo? info) {
     RemoteParticipant? participant = _participants[sid];