iOS embedding uses deprecated API for >iOS 10 #23588
Description
Our default app throws up warnings when building for >iOS 10:
/**
Called if this plugin has been registered for `UIApplicationDelegate` callbacks.
*/
- (void)application:(UIApplication*)application
didRegisterUserNotificationSettings:(UIUserNotificationSettings*)notificationSettings;
UIUserNotificationSettings in particular was deprecated.
We should use appropriate guards and/or update the API calls.