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

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

Change-Id: I2f3b46e0795ec25c12490ef44c56f5605cbfe1ad