Merge "Move emergency call to main thread" into sc-dev am: 295d38ef3b am: fdd74e2220 am: 1d905d431a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/14752810

Change-Id: I65f3d9828b0140c517007beff1fb27bfec377ee2