Use KmErrorOr<T> for key blob auth encryption am: 644cd4d692 am: 128cfe8fa5 am: 4b29aef1be am: 90d81b3cfa am: 34df7193a5

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/1784328

Change-Id: Iaeffd6390a4de7da02264238fab6788f1caab20f