Merge "[RCS]Use ims config to construct SIP UA header" am: b6074670d5 am: 0c2385213f am: 7079166bf2

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1581543

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I118fdb57375149cb18688e12e31105ab4e56de7b