refactor: move timeline config to metadata table (#28227)

* migrate timeline config

---------

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

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

@@ -127,6 +127,11 @@ extension<T extends Object> on MetadataDomain<T> {
             themeMode: repo._read(.mapThemeMode),
             withPartners: repo._read(.mapWithPartners),
           ),
+          timeline: .new(
+            tilesPerRow: repo._read(.timelineTilesPerRow),
+            groupAssetsBy: repo._read(.timelineGroupAssetsBy),
+            storageIndicator: repo._read(.timelineStorageIndicator),
+          ),
         );
       case .systemConfig:
         repo._systemConfig = .new(logLevel: repo._read(.logLevel));