fix(headlines-search): update AdThemeStyle parameter in HeadlinesSearchFetchRequested event

- Replace ThemeData with AdThemeStyle in HeadlinesSearchFetchRequested event
- Update props list to include AdThemeStyle instead of ThemeData
- Adjust parameter name from theme to adThemeStyle for clarity

Author: fulleni

lib/headlines-search/bloc/headlines_search_bloc.dart

@@ -6,6 +6,7 @@ import 'package:core/core.dart';
 import 'package:data_repository/data_repository.dart';
 import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_news_app_mobile_client_full_source_code/ads/models/ad_theme_style.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/app/bloc/app_bloc.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/shared/services/feed_decorator_service.dart';
 

lib/headlines-search/bloc/headlines_search_event.dart

@@ -19,12 +19,12 @@ final class HeadlinesSearchModelTypeChanged extends HeadlinesSearchEvent {
 final class HeadlinesSearchFetchRequested extends HeadlinesSearchEvent {
   const HeadlinesSearchFetchRequested({
     required this.searchTerm,
-    required this.theme,
+    required this.adThemeStyle,
   });
 
   final String searchTerm;
-  final ThemeData theme;
+  final AdThemeStyle adThemeStyle;
 
   @override
-  List<Object> get props => [searchTerm, theme];
+  List<Object> get props => [searchTerm, adThemeStyle];
 }