[Bug]: 线上android 11 出现大量的ANR？帮忙看一下。

### 请描述遇到的问题，以及您所期望的正确的结果

代码中使用了FlutterBoostFragment，在退出页面时会有上述问题。

### 请说明如何操作会遇到上述问题

### 在下面填入关键复现代码

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### 复现的平台

Both

### Flutter SDK版本

3.27.4

### FlutterBoost版本

4.6.5

### 是否延迟初始化FlutterBoost

No

### 解决方案

Start by reproducing the reported exit flow on Android 11 with FlutterBoostFragment, Flutter SDK 3.27.4, and FlutterBoost 4.6.5, then inspect the attached ANR evidence. The issue provides no reproduction code, named files, or tests; done would require identifying the cause of the ANR and verifying that the exit flow no longer produces it.

Written by the indexing model from the issue text.