Merge "Revert "Hide non-system overlay window on ActivityPicker"" into pi-dev am: bcc7f89f85 am: 89d14a36dc am: 30ab86df65 am: 767f72b09b am: fe3572be66

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/14103366

Change-Id: Ib575416cf0f1de16cbac939d3e16ba08281a40d4