Merge "Place split selection placeholder view based on option selected" into sc-dev am: a0c3bbfd2c am: 9ab7d98f45

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14253227

Change-Id: Id8cfdb517c835895f5817b8b773bc25b19d1062e