Merge "Support fade-in divider bar with quick switch gesture" into tm-dev am: 384b521dd5 am: 31d9d7a825

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18160666

Change-Id: I7f35758f787b992f6b7567a2e5ffa9dd70fc971b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>