Change the APN lockdown to gate on PlatformCompat

Instead of just logging access denials to the APN db with
PlatformCompat, query them for whether the caller should be allowed
through and vary our behavior based off that.

Fixes: 144631034
Test: atest TelephonyProviderHostTest
Change-Id: I209218d1b91df3ea1fac690a1a8570dcc87505a0
2 files changed