fix: fixed the ProviderNotFoundException by adding ContentManagementBloc to the MultiBlocProvider in lib/app/view/app.dart. The application should now correctly provide the ContentManagementBloc to the ContentManagementPage and its sub-pages

Author: fulleni

lib/app/view/app.dart

@@ -10,6 +10,7 @@ import 'package:ht_dashboard/app/bloc/app_bloc.dart';
 import 'package:ht_dashboard/app/config/app_environment.dart';
 import 'package:ht_dashboard/app_configuration/bloc/app_configuration_bloc.dart';
 import 'package:ht_dashboard/authentication/bloc/authentication_bloc.dart';
+import 'package:ht_dashboard/content_management/bloc/content_management_bloc.dart';
 import 'package:ht_dashboard/l10n/app_localizations.dart';
 import 'package:ht_dashboard/router/router.dart';
 // Import for app_theme.dart
@@ -90,6 +91,13 @@ class App extends StatelessWidget {
               appConfigRepository: context.read<HtDataRepository<AppConfig>>(),
             ),
           ),
+          BlocProvider(
+            create: (context) => ContentManagementBloc(
+              headlinesRepository: context.read<HtDataRepository<Headline>>(),
+              categoriesRepository: context.read<HtDataRepository<Category>>(),
+              sourcesRepository: context.read<HtDataRepository<Source>>(),
+            ),
+          ),
         ],
         child: _AppView(
           htAuthenticationRepository: _htAuthenticationRepository,