fix(llc): fix connecting while connecting and disconneting (#1237)

* fix(llc): fix connecting while connecting and disconneting

* chore(llc): update changelog

* chore(llc): add test

* chore(llc): improve test

* fix(llc): _resetRequestFlags regardless of the connection status

packages/stream_chat/test/src/ws/websocket_test.dart

@@ -131,6 +131,40 @@ void main() {
     addTearDown(timer.cancel);
   });
 
+  test('`connect`, `disconnect` and `connect` again without waiting', () async {
+    final user = OwnUser(
+      id: 'test-user',
+      name: 'test',
+    );
+    const connectionId = 'test-connection-id';
+    // Sends connect event to web-socket stream
+    final timer = Timer.periodic(const Duration(milliseconds: 300), (_) {
+      final event = Event(
+        type: EventType.healthCheck,
+        connectionId: connectionId,
+        me: user,
+      );
+      webSocketSink.add(json.encode(event));
+    });
+
+    await webSocket.connect(
+      user,
+    );
+
+    webSocket
+      ..disconnect()
+      ..connect(user)
+      ..disconnect();
+    final event = await webSocket.connect(user);
+
+    expect(event.type, EventType.healthCheck);
+    expect(event.connectionId, connectionId);
+    expect(event.me, isNotNull);
+    expect(event.me!.id, user.id);
+
+    addTearDown(timer.cancel);
+  });
+
   test('`connect` should throw if already in connection attempt', () async {
     final user = OwnUser(id: 'test-user');
     webSocket.connect(user);