Merge "Revert "Migrate workspace item adding tests to kotlin"" into sc-v2-dev am: da014976cd am: 6b17728794

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16340532

Change-Id: Ifb4d6dd8bfcdd914c042dd1681bc9bbd977ce09f