PlateFormView中引入Fragment一直报错

## Steps to Reproduce

1、把example下的NativeView里面的TextView换成fragment 会报错,在构造方法中加入：
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = (View) inflater.inflate(R.layout.ih_activity_test, null, true);

2、ih_activity_test中的内容：

3、getView的return改为view
@NonNull
@Override
public View getView() {
return view;
}

4、报错内容为：

Unhandled Exception: PlatformException(error, Binary XML file line #7 in com.idlefish.flutterboost.example:layout/ih_activity_test: Binary XML file line #7 in com.idlefish.flutterboost.example:layout/ih_activity_test: Error inflating class fragment, null, android.view.InflateException: Binary XML file line #7 in com.idlefish.flutterboost.example:layout/ih_activity_test: Binary XML file line #7 in com.idlefish.flutterboost

纠结了一周，麻烦请看看

Start in the example's NativeView implementation and inspect the ih_activity_test layout, NativeFragment, and getView() path described in the report. Reproduce the fragment inflation failure in the Android example, then verify the example can load the fragment without the reported InflateException.

Written by the indexing model from the issue text.