Merge "Move the downgraded conference property" am: f8ac8e9b02 am: 5e119ff2ba am: 8bdb56b695

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1329327

Change-Id: I42bfd6f07b9e003eef28c350ec89ca6644ce0399