feat(entity_details): pass image style to AdLoaderWidget

- Retrieve the user's preferred headline image style from AppBloc
- Pass the image style to AdLoaderWidget in entity details page

Author: fulleni

lib/entity_details/view/entity_details_page.dart

@@ -382,12 +382,22 @@ class _EntityDetailsViewState extends State<EntityDetailsView> {
                         }
                         return tile;
                       } else if (item is AdPlaceholder) {
+                        // Retrieve the user's preferred headline image style from the AppBloc.
+                        // This is the single source of truth for this setting.
+                        final imageStyle = context
+                            .watch<AppBloc>()
+                            .state
+                            .settings
+                            .feedPreferences
+                            .headlineImageStyle;
+                            
                         return AdLoaderWidget(
                           adPlaceholder: item,
                           adService: context.read<AdService>(),
                           adThemeStyle: AdThemeStyle.fromTheme(
                             Theme.of(context),
                           ),
+                          imageStyle: imageStyle,
                         );
                       }
                       return const SizedBox.shrink();