refactor(auth): remove unused event handler

- Removed _onAuthenticationUserChanged
- Simplified state transition logic

Author: fulleni

lib/authentication/bloc/authentication_bloc.dart

@@ -18,7 +18,6 @@ class AuthenticationBloc
     required HtAuthenticationRepository authenticationRepository,
   })  : _authenticationRepository = authenticationRepository,
         super(AuthenticationInitial()) {
-    on<AuthenticationUserChanged>(_onAuthenticationUserChanged);
     on<AuthenticationEmailSignInRequested>(
       _onAuthenticationEmailSignInRequested,
     );
@@ -41,18 +40,6 @@ class AuthenticationBloc
   final HtAuthenticationRepository _authenticationRepository;
   late final StreamSubscription<User> _userSubscription;
 
-  /// Handles [AuthenticationUserChanged] events.
-  void _onAuthenticationUserChanged(
-    AuthenticationUserChanged event,
-    Emitter<AuthenticationState> emit,
-  ) {
-    if (event.user.isAnonymous) {
-      emit(AuthenticationUnauthenticated());
-    } else {
-      emit(AuthenticationAuthenticated(event.user));
-    }
-  }
-
   /// Handles [AuthenticationEmailSignInRequested] events.
   Future<void> _onAuthenticationEmailSignInRequested(
     AuthenticationEmailSignInRequested event,

pubspec.yaml

@@ -1,6 +1,6 @@
 name: ht_main
 description: main headlines toolkit mobile app.
-version: 0.31.0
+version: 0.31.1
 publish_to: none
 repository: https://github.com/headlines-toolkit/ht-main
 environment: