Merge "Clarify how FGS restriction won't apply STICKY FGS restarts" into sc-dev am: 0c1dc2fc76 am: a33d48c48e am: b2d01a74d4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15484572

Change-Id: I838f64e7670fc8f91c02a139ae224e118c8dad3b