feat: show "appears in" albums on asset viewer bottom sheet

fix: multiple RemoteAlbumPages in navigation stack

this also allows us to not have to set the current album before navigating to RemoteAlbumPage

chore: clarification comments

handle nested album pages

fix: hide "appears in" when an asset is not in any albums

fix: way more bottom padding

for some reason we can't query the safe area here :/

mobile/lib/domain/services/remote_album.service.dart

@@ -160,6 +160,10 @@ class RemoteAlbumService {
     return _repository.getCount();
   }
 
+  Future<List<RemoteAlbum>> getAlbumsContainingAsset(String assetId) {
+    return _repository.getAlbumsContainingAsset(assetId);
+  }
+
   Future<List<RemoteAlbum>> _sortByNewestAsset(List<RemoteAlbum> albums) async {
     // map album IDs to their newest asset dates
     final Map<String, Future<DateTime?>> assetTimestampFutures = {};