feat: 播放页虚拟键、小白条、挖孔屏底色改为背景色，新增播放页状态栏显示为背景色

lib/pages/setting/style_setting.dart

@@ -133,6 +133,14 @@ class _StyleSettingState extends State<StyleSetting> {
               style: subTitleStyle,
             ),
           ),
+          const SetSwitchItem(
+            title: '播放页状态栏显示为背景色',
+            subTitle: '关闭则显示为黑色',
+            leading: Icon(Icons.border_outer_outlined),
+            setKey: SettingBoxKey.videoPlayerShowStatusBarBackgroundColor,
+            defaultVal: false,
+            needReboot: true,
+          ),
           const SetSwitchItem(
             title: '播放页移除安全边距',
             subTitle: '隐藏状态栏、撑满屏幕，但播放控件仍处于安全域内',