Merge "Clear calling identity before calling createContextAsUser." into udc-qpr-dev am: 9c6e7c755a am: 71c3084321

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/24086377

Change-Id: I4099da183a6b1abf427a9b6af8b19c08fc035c8f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>