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

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

Change-Id: Iafe8aced9d9dac3620ec599605a558751e8c81bd