Merge "Listen to changes in unused threshold" into sc-dev am: f71b630674 am: 71135fac46 am: 7b4a8d3f65

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Permission/+/14923257

Change-Id: I870decd5bd44441c1b2eec4f336f16bd2cf03054