Merge "Tests for 3rd call reception in DSDA." into udc-dev am: 6cad656c6e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/23125259

Change-Id: I46c5c49969d7ff40a065fb80ef68a5c1ba7e62f2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>