feat: 新增设置：横屏时返回可以直接返回为横屏页面，无需经过竖屏

lib/pages/setting/play_setting.dart

@@ -116,6 +116,12 @@ class _PlaySettingState extends State<PlaySetting> {
             setKey: SettingBoxKey.enableAutoExit,
             defaultVal: false,
           ),
+          const SetSwitchItem(
+            title: '恢复竖屏',
+            subTitle: '退出全屏视频时自动恢复竖屏，关闭可以保持横屏状态',
+            setKey: SettingBoxKey.exitFullscreenAutoVertical,
+            defaultVal: true,
+          ),
           const SetSwitchItem(
             title: '开启硬解',
             subTitle: '以较低功耗播放视频',