Protect TelecomManager#getPhoneAccount with necessary permission. am: ba2e174009 am: 1e68181d5a

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

Change-Id: I121f63814ea32f5fcb4dee64654e2e24acf00b8c