Merge "SF: Fix thread safety for RefreshRateOverlay" into rvc-dev am: ca4cf8ad87 am: 1568bf5f06

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/11203011

Change-Id: I74177b27059141d39f400d9215dc6a37f9b384b6