chore(mobile): use declarative ui in search

The search page makes use of imperative state, which is buggy and
unergonomic - it fights against how flutter wants widgets to be
written. Using declarative state simplifies the code and fixes bugs.

mobile/lib/widgets/search/explore_grid.dart

@@ -5,6 +5,7 @@ import 'package:immich_mobile/entities/asset.entity.dart';
 import 'package:immich_mobile/entities/store.entity.dart';
 import 'package:immich_mobile/models/search/search_curated_content.model.dart';
 import 'package:immich_mobile/models/search/search_filter.model.dart';
+import 'package:immich_mobile/models/search/date_filter.model.dart';
 import 'package:immich_mobile/routing/router.dart';
 import 'package:immich_mobile/utils/image_url_builder.dart';
 import 'package:immich_mobile/widgets/search/thumbnail_with_info.dart';
@@ -53,7 +54,7 @@ class ExploreGrid extends StatelessWidget {
                         people: {},
                         location: SearchLocationFilter(city: content.label),
                         camera: SearchCameraFilter(),
-                        date: SearchDateFilter(),
+                        date: const EmptyDateFilter(),
                         display: SearchDisplayFilters(isNotInAlbum: false, isArchive: false, isFavorite: false),
                         rating: SearchRatingFilter(),
                         mediaType: AssetType.other,