fix(player): 复用播放会话进入全屏

test/recommend/recommend_sections_test.dart

@@ -464,28 +464,28 @@ void main() {
     expect(find.byKey(const Key('recommend-tab-recommend')), findsOneWidget);
   });
 
-  testWidgets('should_open_standalone_player_from_title_and_watch_all', (
+  testWidgets('should_open_full_player_presentation_from_title_and_watch_all', (
     tester,
   ) async {
     await _pumpRecommend(tester);
 
     await tester.tap(find.byKey(const Key('home-feed-series-name')));
     await tester.pumpAndSettle();
+    expect(find.byType(PlayerPage), findsOneWidget);
     expect(
-      tester.widget<PlayerPage>(find.byType(PlayerPage).last).homeMode,
-      isFalse,
+      tester.widget<PlayerPage>(find.byType(PlayerPage)).homeMode,
+      isTrue,
     );
-    await tester.binding.handlePopRoute();
+    expect(find.byKey(const Key('player-back')), findsOneWidget);
+    tester.state<NavigatorState>(find.byType(Navigator).first).pop();
     await tester.pumpAndSettle();
     expect(find.byKey(const Key('recommend-page')), findsOneWidget);
     expect(find.byKey(const Key('recommend-tab-recommend')), findsOneWidget);
 
     await tester.tap(find.byKey(const Key('home-feed-full-series')));
     await tester.pumpAndSettle();
-    expect(
-      tester.widget<PlayerPage>(find.byType(PlayerPage).last).homeMode,
-      isFalse,
-    );
+    expect(find.byType(PlayerPage), findsOneWidget);
+    expect(find.byKey(const Key('player-back')), findsOneWidget);
   });
 
   testWidgets('should_pull_refresh_recommend_feed_from_the_first_video', (