[automerger skipped] Fix flickering issues with divider during split animation am: fe9a7f3f38 -s ours

am skip reason: Merged-In I3b37f2b0478035d7a3181ae7c23962fe75a13b2c with SHA-1 91fb2f2e5e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/27849399

Change-Id: If0f02ac646d61d16f54b43418946a827c64c9cbc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>