FlutterFlow not adding Apple providers to App Check files?

I've run into an issue with Firebase App Check on iOS. Although I enabled App Check in FlutterFlow and selected the appropriate provider in Firebase (App Attest), when I export the project, the generated code in firebase_app_check_util.dart only sets the androidProvider, like this:

FirebaseAppCheck.instance.activate( androidProvider: AndroidProvider.playIntegrity, );

Because appleProvider is missing, the app fails to initialize App Check on iOS and results in this Firebase error during runtime:

Error 400 - App not registered

For reference, I only have App Attest registered on iOS, I don't have anything registered for Android or web.