Merge "add enforcement on getOwnSelfManagedPhoneAccounts" into tm-dev am: 1dc39794f8 am: 914c780115 am: 149d3b1953 am: 0fdc33be8e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/18501687

Change-Id: I7e99da77b51932c3aa60c64b3dd05e1d3d128a8a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>