Merge "Fix task root bounds be overwritten when dismiss split screen." into rvc-dev am: 49ded461 am: cd86ac58 am: fdda6890

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11818545

Change-Id: If584ad331005dd44210b46e5536c495a16838edb