Call into ART Service for to delete OAT artifacts when it is enabled.

PackageManagerService.deleteOatArtifactsOfPackage is used e.g. from
AppHibernationService via the deprecated
PackageManagerInternalBase.deleteOatArtifactsOfPackage.

Test: adb shell cmd app_hibernation set-state --global com.android.egg true
  with dalvik.vm.useartservice=true and check that ART Service gets
  called and returns a freed byte count.
Bug: 251903639
Change-Id: I7bc01274067abaf1f8de8c0d82020550d23a22f9