Merge "Rename ImsPhone.getRoamingState -> getLastKnownRoamingState" am: 22ede622f6

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1683472

Change-Id: I2b0ff8874d193c3baa6cd61e9f03bcc90ec9273a