fix(mobile): retain edited title when album updates (#15806)

* fix(album-viewer): retain edited title when album updates

ensure `AlbumViewerEditableTitle` keeps user input while editing,
even when the album updates from another provider. fall back to
`albumName` only when not in edit mode.

* linting

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/widgets/album/album_viewer_editable_title.dart

@@ -16,7 +16,14 @@ class AlbumViewerEditableTitle extends HookConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final titleTextEditController = useTextEditingController(text: albumName);
+    final albumViewerState = ref.watch(albumViewerProvider);
+
+    final titleTextEditController = useTextEditingController(
+      text: albumViewerState.isEditAlbum &&
+              albumViewerState.editTitleText.isNotEmpty
+          ? albumViewerState.editTitleText
+          : albumName,
+    );
 
     void onFocusModeChange() {
       if (!titleFocusNode.hasFocus && titleTextEditController.text.isEmpty) {