Merge "Only check pending emergency call if TelephonyConnectionService nonull." into sc-dev am: 985f9204af am: 45f828fb22

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telephony/+/15019314

Change-Id: I4996624ff791ec1b2eda590070a267c853e49180