fix(player): 完善进度预览清屏与下拉刷新

test/playback/seek_progress_bar_test.dart

@@ -294,7 +294,7 @@ void main() {
     expect(find.textContaining('/ 00:12'), findsOneWidget);
     expect(
       tester.getSize(find.byKey(const Key('scrub-preview-card'))).width,
-      120,
+      96,
     );
 
     await gesture.up();