iOS provisional notification permission not working

Describe the bug Requesting provisional permissions returns false immediatly and does display a system prompt.

To Reproduce

1. Initialize the plugin using the following ios settings. Note that this call also returns false.

final DarwinInitializationSettings iosSettings =
        const DarwinInitializationSettings(
      requestAlertPermission: false,
      requestSoundPermission: false,
      requestBadgePermission: false,
      requestProvisionalPermission: true,
      requestCriticalPermission: false,
      defaultPresentAlert: false,
      defaultPresentSound: false,
      defaultPresentBadge: false,
      defaultPresentBanner: false,
      defaultPresentList: false,
      onDidReceiveLocalNotification: null,
      notificationCategories: const <DarwinNotificationCategory>[],
    );

2. Request permission later on using the following API:

requestPermissions(
  sound: false,
  alert: false,
  badge: false,
  provisional: true,
  critical: false,
);

3. Receive a false response and notifications cannot be scheduled.

Expected behavior Provisional notifications should be granted automatically as described in the docs here.

Maybe related: This line in the code comments mentions needing special approval from Apple to use provisional permissions. But I can't see any references to it at the linked page.