Merge "Make sure tasks not in split root is invisible while in split" into...

Merge "Make sure tasks not in split root is invisible while in split" into sc-dev am: 34f49d6c am: 428da61d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14440881

Change-Id: I1309db41d4eb6d08154e7f565f560dedc8cb36b7