Protect TelecomManager#getPhoneAccount with necessary permission. am: ba2e174009 am: 0f3abec991

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/15053354

Change-Id: I340e61e9c78e8f7538e7e640649d1547331d7990