Specify UID in getAuthenticatorIds

Allow the caller to get authenticator IDs for a specific UID. If
that UID is not the caller UID the USE_BIOMETRIC_INTERNAL permission
is required; this is enforced by AuthService.

Test: aosp/1686345
Bug: 163866361
Change-Id: I0eef28ecefb85f1c10a73a354d08c38087d59814