Flutter # Android embedding v2 相关bug

项目场景：

学习flutter项目，参考wechat_flutter项目，然而发现无法运行。

问题描述：

报错情况1：
Your Flutter application is created using an older version of the Android
embedding. It is being deprecated in favor of Android embedding v2. Follow the steps at

https://flutter.dev/go/android-project-migration

to migrate your project. You may also pass the --ignore-deprecation flag to
ignore this check and continue with the deprecated v1 embedding. However,
the v1 Android embedding will be removed in future versions of Flutter.
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The detected reason was:

D:\tmp\flutter\im-flutter\android\app\src\main\AndroidManifest.xml uses android:name="io.flutter.app.FlutterApplication"

报错情况2：
This app i