feat(app): 完善播放协议搜索与空状态

test/library/favorite_controller_test.dart

@@ -176,6 +176,9 @@ class _PagedFavoriteRepository implements FavoriteRepository {
   @override
   Future<void> remove(String dramaId) async {}
 
+  @override
+  Future<void> removeMany(List<String> dramaIds) async {}
+
   @override
   Future<bool> toggle(String dramaId) async => true;
 }