fix(player): 保持推荐页返回时播放状态

lib/pages/recommend/recommend_page.dart

@@ -46,11 +46,15 @@ class RecommendPage extends StatefulWidget {
   State<RecommendPage> createState() => _RecommendPageState();
 }
 
-class _RecommendPageState extends State<RecommendPage> {
+class _RecommendPageState extends State<RecommendPage>
+    with AutomaticKeepAliveClientMixin<RecommendPage> {
   RecommendInnerTab _tab = RecommendInnerTab.feed;
   final PageController _pageController = PageController();
   int _scrubCancelRequest = 0;
 
+  @override
+  bool get wantKeepAlive => true;
+
   @override
   void initState() {
     super.initState();
@@ -85,6 +89,7 @@ class _RecommendPageState extends State<RecommendPage> {
 
   @override
   Widget build(BuildContext context) {
+    super.build(context);
     final categories = context.read<CategoryController>();
     return ColoredBox(
       key: const Key('recommend-page'),