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 am: 159076ff

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

Change-Id: Ib4e23c232beefabbb15d5ec9f14712217d5fe934