refactor(localization): update import statements for localization

- Replace 'ht_dashboard/l10n/l10n.dart' with 'flutter_news_app_web_dashboard_full_source_code/l10n/l10n.dart'
- Add 'core/core.dart' import
- Remove 'ht_shared/ht_shared.dart' import

Author: fulleni

lib/shared/extensions/content_status_l10n.dart

@@ -1,6 +1,6 @@
+import 'package:core/core.dart';
 import 'package:flutter/widgets.dart';
-import 'package:ht_dashboard/l10n/l10n.dart';
-import 'package:ht_shared/ht_shared.dart';
+import 'package:flutter_news_app_web_dashboard_full_source_code/l10n/l10n.dart';
 
 /// Provides a localized string representation for [ContentStatus].
 extension ContentStatusL10n on ContentStatus {