[Bug]: 鸿蒙白屏

### 请描述遇到的问题，以及您所期望的正确的结果

鸿蒙flutter 3.7.12 3.22.1 3.27.5 flutter_boost 4.6.5 打包har 运行flutter页面白屏

### 请说明如何操作会遇到上述问题

_No response_

### 在下面填入关键复现代码

```
```

### 复现的平台

Both

### Flutter SDK版本

鸿蒙 flutter 3.22.0

### FlutterBoost版本

4.6.5

### 是否延迟初始化FlutterBoost

No

### 解决方案

_No response_

Start by reproducing the blank Flutter page in a HarmonyOS HAR package with Flutter 3.22.0 and FlutterBoost 4.6.5, using the issue's no-delay-initialization setting. Compare the result across the listed Flutter versions and inspect the FlutterBoost HarmonyOS integration entry points. Done means the packaged app displays the Flutter page instead of a blank screen.

Written by the indexing model from the issue text.