Fix security vulnerability when register phone accounts. am: 833dd848 am:...

Fix security vulnerability when register phone accounts. am: 833dd848 am: 581e2232 am: a0d27810 am: 275debd2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/20028194



Change-Id: Iebea286319202fc163ff973441deaeab4d8f95ab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>