test(session): cover avatar refresh and session teardown

Add regression tests for avatar reset and token-change refresh, stale 401 handling, idempotent session teardown and account-scoped preference cleanup. Update existing cubit tests for the new session dependency.

Refs: #1113

test/features/menu/presentation/bloc/menu_cubit_test.dart

@@ -4,6 +4,8 @@ import 'package:eatvio_app/features/profile/repositories/profile_repository.dart
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mockito/annotations.dart';
 import 'package:mockito/mockito.dart';
+
+import '../../../../fixtures/doubles/session_doubles.dart';
 import 'menu_cubit_test.mocks.dart';
 
 @GenerateNiceMocks([MockSpec<ProfileRepository>()])
@@ -25,12 +27,12 @@ void main() {
     });
 
     test('начальное состояние - MenuState', () {
-      menuCubit = MenuCubit(mockProfileRepository);
+      menuCubit = MenuCubit(mockProfileRepository, FakeSessionLifecycleService());
       expect(menuCubit!.state, isA<MenuState>());
     });
 
     test('makePassKey - успешно создает passKey', () async {
-      menuCubit = MenuCubit(mockProfileRepository);
+      menuCubit = MenuCubit(mockProfileRepository, FakeSessionLifecycleService());
       const expectedPassKey = 'test-pass-key';
 
       when(mockProfileRepository.getPassKey(
@@ -48,7 +50,7 @@ void main() {
     });
 
     test('makePassKey - возвращает null при ошибке', () async {
-      menuCubit = MenuCubit(mockProfileRepository);
+      menuCubit = MenuCubit(mockProfileRepository, FakeSessionLifecycleService());
 
       when(mockProfileRepository.getPassKey(
         routeName: 'product_nutritional_value.index',