Merge "When KEYCODE_BACK is received, hide keyboard" into sc-dev am: 24c8ebd88d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15107283

Change-Id: I39e0e034ab6770db4ba63fc6bb8b46d4e2c17d38