fix(flutter): 更多面板增加小窗播放入口

lib/pages/player/player_view_actions.dart

@@ -35,6 +35,9 @@ extension _PlayerViewActions on _PlayerPageState {
           },
           onClear: _hideChrome,
           onDownload: () => requestEpisodeDownload(context, episode.id),
+          onPip: logic.pictureInPicture.isPlatformSupported
+              ? () => unawaited(logic.enterPip(context))
+              : null,
         ),
       ),
     );