Merge "Hide keyboard when thumb scroller is visible." into tm-dev am: d6d0dc3c am: ae9ab8a8

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



Change-Id: I5d1d716c1b86822c1a1b116404e066e374f396b3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>