Merge "Make sure tasks below home task is invisible while in split" into...

Merge "Make sure tasks below home task is invisible while in split" into sc-dev am: 52e3d9a4 am: 467f04ac

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14328763

Change-Id: I6948b2c5ab77718b7e1ea440f408be8ca446e203