Merge "Don't send null data call list response" into tm-dev am: 516a7d21

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/17803170



Change-Id: I75b5a715d628d84522021931b4572820287fb107
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>