Fix security vulnerability of TelecomManager#getPhoneAccountsForPackage am: f3f2d7c2dc am: 21bc22a06e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/12141784

Change-Id: I62f3bfba9ae7731b0362bb2d5d049c72f523a5c7