refactor: move image config to metadata table (#28228)

* migrate image config

---------

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

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

@@ -132,6 +132,7 @@ extension<T extends Object> on MetadataDomain<T> {
             groupAssetsBy: repo._read(.timelineGroupAssetsBy),
             storageIndicator: repo._read(.timelineStorageIndicator),
           ),
+          image: .new(preferRemote: repo._read(.imagePreferRemote), loadOriginal: repo._read(.imageLoadOriginal)),
         );
       case .systemConfig:
         repo._systemConfig = .new(logLevel: repo._read(.logLevel));