feat(flutter): 接入分类记录收藏与下载授权

test/support/fake_watch_history.dart

@@ -64,4 +64,10 @@ class FakeWatchHistory implements WatchHistoryRepository {
 
   @override
   Future<void> remove(String dramaId) async => records.remove(dramaId);
+
+  @override
+  Future<void> clear() async {
+    records.clear();
+    recentRecords = const [];
+  }
 }