（该问题未完全修复）安卓app进入桌面，返回应用，动画区域会有不停地闪烁出现

问题，见bug单
https://github.com/alibaba/flutter_boost/issues/1715

@0xZOne
我看还有一个场景，还会复现这个问题，没有完全修改。

**复现方式：**
前后台切换。

**原因，代码如下：**

```
最后运行到：
FlutterBoost.instance().getPlugin().onForeground();
然后：
changeFlutterAppLifecycle(FLUTTER_APP_STATE_RESUMED);
```

现象：

https://user-images.githubusercontent.com/9548501/195744241-0d39c050-64b3-487b-95f2-68c4b290b9de.mp4

Start by reading the linked issue #1715 and tracing the foreground transition described here, especially FlutterBoost.instance().getPlugin().onForeground() followed by changeFlutterAppLifecycle(FLUTTER_APP_STATE_RESUMED). Reproduce the Android background-to-foreground switch and compare it with the attached video; done means the animation area no longer flickers when returning to the app.

Written by the indexing model from the issue text.