fix: do not clear hash on updated_at change (#24039)

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/infrastructure/repositories/local_album.repository.dart

@@ -261,7 +261,6 @@ class DriftLocalAlbumRepository extends DriftDatabaseRepository {
           durationInSeconds: Value(asset.durationInSeconds),
           id: asset.id,
           orientation: Value(asset.orientation),
-          checksum: const Value(null),
           isFavorite: Value(asset.isFavorite),
         );
         batch.insert<$LocalAssetEntityTable, LocalAssetEntityData>(