Protect TelecomManager#getPhoneAccount with necessary permission. am: ba2e174009 am: 5a8d93dede am: e0bb562beb

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

Change-Id: I46199ea14299dd7fce48119973f7d2ec6308e0d3