fix(live_room): 修复直播间关闭按钮点击后overlay显示异常问题

- 调整代码格式以提高可读性
- 修改关闭按钮点击逻辑，先显示overlay再执行页面返回
- 添加延迟机制确保overlay正确显示后再返回上一页

lib/pages/discover/live_room_page.dart

@@ -165,7 +165,8 @@ class _LiveRoomPageState extends State<LiveRoomPage> {
                         children: [
                           SizedBox(height: 10.w),
                           Obx(() {
-                            final detail = _roomController.rtcChannelDetail.value;
+                            final detail =
+                                _roomController.rtcChannelDetail.value;
                             final anchorInfo = detail?.anchorInfo;
 
                             final userName = anchorInfo!.nickName;
@@ -177,8 +178,11 @@ class _LiveRoomPageState extends State<LiveRoomPage> {
                               popularityText: popularityText,
                               avatarAsset: avatarAsset,
                               onCloseTap: () {
-                                _overlayController.toggle();
-                                Get.back();
+                                _overlayController.show();
+                                // 延迟返回，确保 overlay 先显示
+                                Future.microtask(() {
+                                  Get.back();
+                                });
                               },
                             );
                           }),