Refresh carrier service state when carrier app is en/disabled

CarrierPrivilegesTracker will monitor package en/disabling
and update the carrier service accordingly. This will remove
the burden from downstream components who can reliably
get the carrier service change through CarrierPrivilegesCallback.

When carrier package is disabled by user or when in rare case
when we receive package changed but package does not exist
(e.g. a race occurred with package removed), treat it as the
same as package has been removed by cleaning up the cache.

Bug: 200277555
Test: atest CarrierPrivilegesTrackerTest
Test: atest android.appsecurity.cts.PkgInstallSignatureVerificationTest
Change-Id: Ia57a2d8aca5fff8a0041008e54e3b30a51801472