Merge "Added API to specify if split-screen should exit on hide" into sc-dev am: 6cd63cb4ee

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13522458

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic88fd96a8a95da171bfa057e25240233b470358a