fix(flutter): 改为浅色播放页底栏

lib/pages/player/player_view.dart

@@ -216,7 +216,8 @@ class _PlayerPageState extends State<PlayerPage> with WidgetsBindingObserver {
       fit: StackFit.expand,
       children: [
         ColoredBox(
-          color: AppColors.onSurface,
+          key: const Key('player-background'),
+          color: AppColors.ink,
           child: widget.homeMode
               ? null
               : RemoteImage(