Merge "Hide keyboard when thumb scroller is visible." into tm-dev am: d6d0dc3ca8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18819707

Change-Id: I4bbd6ea6173d00e828f55d93c7f9428f30d5534f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>