Add API to set package and class name of pointing UI app am: 87dce73ae0

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/22791612

Change-Id: I98ccf2d3a21fd3092c497c7aaea5005cbc7db7e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>