Merge "If hometask is last task to be dismissed, show empty recents instead of home screen" into sc-v2-dev am: 36705e6039

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16273821

Change-Id: I07a1681b8d5ba1a5699537e4f6e5f981ae09718b