Verify querent for printing app links state

Verifies that printing domain verification state asserts that
the caller is an approved querent, to match the
getDomainVerificationInfo Java API.

Also allows callers with the DUMP permission to be a querent, so that
dumpsys package still works.

Test: atest DomainVerificationEnforcerTest

Change-Id: I9ad409ba15ce1a358ca8c0e047444a2fa6d2140b