[avf] Adjust IRPC VTS tests to handle AVF in unsupported env

This cl adjusts IRPC VTS tests so that it can handle the IRPC AVF
impl in an environment where the IRPC operations are not supported.

Bug: 299257581
Test: atest VtsHalRemotelyProvisionedComponentTargetTest
Change-Id: Iae96076c20e360e6a4aca5518ca8df21920f6978
2 files changed