Merge "Make get/setSystemThresholdReportingRequestedWhileIdle @SystemApi" am: 1f8d32dc29 am: 356872f885

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1884688

Change-Id: I136a04f82ee3b1b4a75bfab839ca3efeaf3834d6