[ADI][27/N] addressing API feedback

BUG: 423897213
BUG: 360129657
FIXES: 423897213

FLAG: android.content.pm.verification_service

API-Coverage-Bug: 420966373

Test: atest android.content.pm.verify.developer.DeveloperVerificationSessionTest
Test: atest android.content.pm.verify.developer.DeveloperVerificationStatusTest
Test: atest android.content.pm.verify.developer.DeveloperVerifierServiceTest
Test: atest com.android.server.pm.verify.developer.DeveloperVerificationRequestStatusTrackerTest
Test: atest com.android.server.pm.verify.developer.DeveloperVerifierControllerTest
Test: atest com.android.server.pm.PackageInstallerServiceTest
Test: atest android.content.pm.cts.DeveloperVerifierServiceTest

Change-Id: Iff973ac386a9d0f1cc48f63b838d32a924540009