fix(flutter): 调整收藏页星标操作

test/library/favorites_page_test.dart

@@ -54,7 +54,7 @@ void main() {
       tester.widget<Text>(find.byKey(const Key('favorites-count'))).data,
       '2 favorites',
     );
-    expect(find.text('Long press a card to remove'), findsOneWidget);
+    expect(find.text('Long press a card to remove'), findsNothing);
     expect(find.text('Drama signal'), findsOneWidget);
     expect(find.text('Drama city'), findsOneWidget);
     final title = tester.widget<Text>(
@@ -71,12 +71,19 @@ void main() {
       tester.getSize(find.byKey(const Key('favorite-remove-signal'))),
       const Size(28, 28),
     );
+    expect(find.byIcon(Icons.star_rounded), findsNWidgets(2));
+    expect(find.byIcon(Icons.favorite_rounded), findsNothing);
     final refresh = tester.widget<RefreshIndicator>(
       find.byType(RefreshIndicator),
     );
     expect(refresh.color, AppColors.blue);
     expect(refresh.backgroundColor, AppColors.card);
     expect(refresh.strokeWidth, 2);
+
+    await tester.tap(find.byKey(const Key('favorite-remove-signal')));
+    await tester.pumpAndSettle();
+
+    expect(find.byKey(const Key('favorite-card-signal')), findsNothing);
   });
 
   testWidgets('should_keep_card_and_show_failure_when_remove_fails', (