refactor(router): wrap SavedHeadlinesPage in BlocProvider for dependency injection

- Add BlocProvider<HeadlinesFeedBloc> to manage dependencies for SavedHeadlinesPage
- Inject necessary repositories and services into HeadlinesFeedBloc
- Use context.read to access required providers
- Set up initialUserContentPreferences for HeadlinesFeedBloc

Author: fulleni

lib/router/router.dart

@@ -364,7 +364,27 @@ GoRouter createRouter({
           GoRoute(
             path: Routes.accountSavedHeadlines,
             name: Routes.accountSavedHeadlinesName,
-            builder: (context, state) => const SavedHeadlinesPage(),
+            builder: (context, state) => BlocProvider<HeadlinesFeedBloc>(
+              create: (context) {
+                final appBloc = context.read<AppBloc>();
+                final initialUserContentPreferences =
+                    appBloc.state.userContentPreferences;
+                return HeadlinesFeedBloc(
+                  headlinesRepository: context.read<DataRepository<Headline>>(),
+                  feedDecoratorService: FeedDecoratorService(),
+                  adService: context.read<AdService>(),
+                  appBloc: appBloc,
+                  inlineAdCacheService: context.read<InlineAdCacheService>(),
+                  feedCacheService: context.read<FeedCacheService>(),
+                  initialUserContentPreferences: initialUserContentPreferences,
+                  engagementRepository: context
+                      .read<DataRepository<Engagement>>(),
+                  contentLimitationService: context
+                      .read<ContentLimitationService>(),
+                );
+              },
+              child: const SavedHeadlinesPage(),
+            ),
           ),
         ],
       ),