Merge "Handle emergency registration failure case" into udc-dev am: 47bcde88 am: 5f22c3e0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/22626472



Change-Id: I74e25f518573656deb94f721b72cd7b4a0d1a5e8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>