[app-to-app] Request permission failed after integrating flutter framework

## 💬 Questions and Help

I build iOS framework with command `flutter build ios-framework`, and my business contains Camera Permission Request.
After the framework is integrated, the permission request failed.
I know I can add config in Podfile:
```
post_install do |installer|
installer.pods_project.targets.each do |target|
flutter_additional_ios_build_settings(target)

target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
#dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
'PERMISSION_LOCATION=1',
'PERMISSION_PHOTOS=1',
'PERMISSION_CAMERA=1'
]
end
end
end
```

But if the flutter project is built as framework, it won't work, because it won't add the right macro such as **PERMISSION_LOCATION=1** to the flutter target.
What should I do?