Merge "Add new TelecomManager method to check if a self-mgd app is in a call." into tm-dev am: e429ec01e7 am: 207c87409d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17414188

Change-Id: I5c50b6a02521bfb984887071e3b3130e80d92125
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>