Merge "Merge "Hide split options for focused task." into sc-v2-dev am: f2907c6ce3" into sc-v2-dev-plus-aosp am: f297df02ee

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15900194

Change-Id: I597ba9aceacd75af11c17ecccf58b43bf0371701