Merge "Consolidate split divider show/hide behavior" into tm-qpr-dev am: 064d88d8 am: 8ab17926

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22099682



Change-Id: I66e1a08ccfbfac1eb314d0a30fc1d9b8d3ffa73c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>