Revert^2 "Migrate audioflinger package validation"

This reverts commit 55532058.

Reason for revert: incorrect original merge order lead to post-submit
failure.

Fixed callingPid overwritten during validation issue.

Bug: 338089555
Test: CtsMediaAudioTestCases
Test: CtsVoiceInteractionTestCases
Test: android.cts.statsdatom.voiceinteraction.HotwordDetectorKeyphraseTriggeredStatsTest
Flag: com.android.media.audio.audioserver_permissions
Change-Id: I29be398869e2074c12fc23f38178fd82686461de