Merge "Add imsCall#getCallSession() null check in...

Merge "Add imsCall#getCallSession() null check in ImsPhoneCallTracker#maybeSetVideoCallProvider." into tm-dev am: 36e8e033 am: 20c815e5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18629534



Change-Id: Ic39bb4005d5c97f5fd41b4400bf37c3ca13b0d4c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>