WidgetsFlutterBinding.ensureInitialized();

## Steps to Reproduce
**A small application to reproduce the bug(最小化可复现的demo)**

1. ...
2. ...
3. ...

**Flutter Boost Version**
**Target Platform:**
**Target OS version/browser:**
**Devices:**

## Logs
add your crash log or something else.

```
```///创建一个自定义的Binding，继承和with的关系如下，里面什么都不用写
class CustomFlutterBinding extends WidgetsFlutterBinding
with BoostFlutterBinding {}
和 WidgetsFlutterBinding.ensureInitialized(); 这两个可以共存吗？
我现在推送必须使用这句代码，加上后会和CustomFlutterBinding 冲突，WidgetsFlutterBinding.ensureInitialized();如何使用？

Start with the repository README and the Flutter binding entry points referenced in the report: CustomFlutterBinding, BoostFlutterBinding, and WidgetsFlutterBinding.ensureInitialized(). Reproduce the conflict in a minimal Flutter application, then verify and document the initialization behavior and expected compatible usage.

Written by the indexing model from the issue text.