change logic for determining emergency number am: 65e5f676 am: eedec7dc...

change logic for determining emergency number am: 65e5f676 am: eedec7dc am: bc46b01a am: b9d0b301

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



Change-Id: I204a5c5ceef1408b64bdff49af035af97947f106
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>