fix: Multiple fixes

- Improve performance when a lot of items are "unknown". Thanks to https://github.com/dattran-pt19/group_grid_view
- Fix some behaviour in the refresh code

lib/src/ui/bloc/anime_list_bloc.dart

@@ -36,6 +36,8 @@ class AnimeListBloc extends Bloc<AnimeListEvent, AnimeListState> {
   final List<MangaTrackingData> _mangas =
       List<MangaTrackingData>.empty(growable: true);
 
+  List<AnimeTrackingData> get unfilteredAnime => _animes;
+
   List<AnimeTrackingData> _getFilteredAnime({
     MediumTrackingState? trackingState,
   }) {

lib/src/ui/bloc/calendar_bloc.dart

@@ -28,7 +28,7 @@ class CalendarBloc extends Bloc<CalendarEvent, CalendarState> {
     );
 
     final al = GetIt.I.get<AnimeListBloc>();
-    final animes = al.state.animes.where((anime) => anime.airing);
+    final animes = al.unfilteredAnime.where((anime) => anime.airing);
     emit(
       state.copyWith(
         refreshing: true,
@@ -40,21 +40,33 @@ class CalendarBloc extends Bloc<CalendarEvent, CalendarState> {
     for (final anime in animes) {
       emit(state.copyWith(refreshingCount: state.refreshingCount + 1));
 
-      Anime apiData;
+      String? broadcastDay;
+      bool airing;
       try {
-        apiData = await Jikan().getAnime(int.parse(anime.id));
-      } catch (_) {
-        print('API request for anime ${anime.id} failed');
-        continue;
+        final apiData = await Jikan().getAnime(int.parse(anime.id));
+        airing = apiData.airing;
+        broadcastDay = apiData.broadcast?.split(' ').first;
+      } catch (ex) {
+        print('API request for anime ${anime.id} failed: $ex');
+        airing = false;
       }
 
-      if (!apiData.airing) {
+      print('Anime "${anime.title}": airing=${airing}');
+      if (!airing) {
         al.add(
           AnimeUpdatedEvent(
             anime.copyWith(airing: false, broadcastDay: null),
             commit: true,
           ),
         );
+      } else if (anime.broadcastDay != broadcastDay) {
+        print('Updating Anime "${anime.title}": broadcastDay=$broadcastDay');
+        al.add(
+          AnimeUpdatedEvent(
+            anime.copyWith(airing: true, broadcastDay: broadcastDay),
+            commit: true,
+          ),
+        );
       }
 
       // Prevent hammering Jikan