fix(shared): update import path for FeedCore widget

- Update import statement in entity_details_page.dart
- Update import statement in headline_details_page.dart
- Change shared.dart import to direct feed_core.dart import in both files

Author: fulleni

lib/entity_details/view/entity_details_page.dart

@@ -11,6 +11,7 @@ import 'package:flutter_news_app_mobile_client_full_source_code/l10n/app_localiz
 import 'package:flutter_news_app_mobile_client_full_source_code/l10n/l10n.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/router/routes.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/shared/shared.dart';
+import 'package:flutter_news_app_mobile_client_full_source_code/shared/widgets/feed_core/feed_core.dart';
 import 'package:go_router/go_router.dart';
 import 'package:ui_kit/ui_kit.dart';
 

lib/headline-details/view/headline_details_page.dart

@@ -12,7 +12,7 @@ import 'package:flutter_news_app_mobile_client_full_source_code/headline-details
 import 'package:flutter_news_app_mobile_client_full_source_code/headline-details/bloc/similar_headlines_bloc.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/l10n/l10n.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/router/routes.dart';
-import 'package:flutter_news_app_mobile_client_full_source_code/shared/shared.dart';
+import 'package:flutter_news_app_mobile_client_full_source_code/shared/widgets/feed_core/feed_core.dart';
 import 'package:go_router/go_router.dart';
 import 'package:intl/intl.dart';
 import 'package:share_plus/share_plus.dart';