Merge "Revert "Enhance IMS/RCS graceful tear down"" into udc-dev am: 2795f8ab

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/23036396



Change-Id: I022bca11c2c654de920d66015e17d19e137a2a4e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>