Merge "Add test coverage for EmergencyCallHelper." into udc-dev am: 3d4c6eeb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/23143003



Change-Id: I758380c60bcccd20035b0f93f360b79a80806cdf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>