refactor(headlines-feed): remove unused headlinesFeedBloc extra parameter

- Removed the 'headlinesFeedBloc' parameter from the extra map when navigating to the feed filter page
- This parameter is no longer needed as the 'filterToEdit' parameter already provides the required information

Author: fulleni

lib/headlines-feed/view/saved_headlines_filters_page.dart

@@ -161,8 +161,6 @@ class _SavedHeadlinesFiltersView extends StatelessWidget {
                         Routes.feedFilterName,
                         extra: {
                           'initialFilter': filter.criteria,
-                          'headlinesFeedBloc': context
-                              .read<HeadlinesFeedBloc>(),
                           'filterToEdit': filter,
                         },
                       );