change logic for determining emergency number am: 65e5f676 am: a0756efe...

change logic for determining emergency number am: 65e5f676 am: a0756efe am: fa5673f0 am: 5ca7b75b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18284852



Change-Id: I5f87a1e2ee46a324e9a055b30e22f0023e0b435a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>