fix(client): notifyListeners after initialize

Author: kkweon

client/lib/view_models/view_model_videos.dart

@@ -53,6 +53,7 @@ class FavoriteVideoViewModel extends ChangeNotifier {
             ?.map((e) => int.parse(e, radix: 10))
             .toSet() ??
         {};
+    notifyListeners();
   }
 
   Future<void> toggleFavoriteVideo(int prID) async {

client/lib/widgets/detail/recommendation.dart

@@ -42,11 +42,12 @@ class RecommendationWidget extends StatelessWidget {
           ScaffoldMessenger.of(context).removeCurrentSnackBar();
           ScaffoldMessenger.of(context).showSnackBar(SnackBar(
             backgroundColor: Theme.of(context).colorScheme.error,
-            content: Text("https://arxiv.org/abs/${paper.arxivId} is not a valid URL"),
+            content: Text(
+                "https://arxiv.org/abs/${paper.arxivId} is not a valid URL"),
             action: SnackBarAction(
               label: "OK",
               textColor: Theme.of(context).colorScheme.onError,
-              onPressed: (){},
+              onPressed: () {},
             ),
           ));
         },