Merge "Turn off RTT if a carrier doesn't support it" am: 52993a3e am: b0e2bcb6 am: 2996ad26

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ims/+/1322611

Change-Id: I269711d2ca302839e353ef735a0e5954f401c554