Merge "Revert "Hide non-system overlay window on ActivityPicker"" into pi-dev am: bcc7f89f85 am: 89d14a36dc

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

Change-Id: I02b3f057bfb03aa1e2d57ba0ce22854df6690bd9