Anonymous users should not connect to the WS (#500)

Author: kanat

packages/stream_video/lib/src/stream_video.dart

@@ -251,6 +251,12 @@ class StreamVideo {
 
   /// Connects the user to the Stream Video service.
   Future<Result<UserToken>> connect() async {
+    if (currentUserType == UserType.anonymous) {
+      _logger.w(() => '[connect] rejected (anonymous user)');
+      return Result.error(
+        'Cannot connect anonymous user to the WS due to Missing Permissions',
+      );
+    }
     _connectOperation ??= _connect().asCancelable();
     return _connectOperation!
         .valueOrDefault(Result.error('connect was cancelled'))