Merge "Handle the cases when RCS config is null" am: b3a224fa12 am: e42b023997

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1537043

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Iad1748d435f646ce5a94b77619a416c470927df7