Introduce listUIChanges API for developer UI

Filter out changes that are: logging only, older then enabled after P,
newer then enabled after Q.
Added missing @Test that broke builds.

Test: atest com.android.server.compat.PlatformCompatTest
Bug: 151299145
Change-Id: Ic4c12ceec3f4018a1f206b8498e8216466ecf960
4 files changed