Merge "Use IMM.hideSoftInputFromWindow to close the window" into sc-dev am: e2522016ae am: fea6573bd5 am: 48a5787a40

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14529286

Change-Id: I357d97c7e3d396313043c8c3f1e02879beb300c0