Use this if you want a "suggested" transform from hitting a Scene anchor, i.e.
how best to "place an app/widget" on a surface.
When hitting vertical surfaces; Y is world-up, Z is surface normal.
When hitting horizontal surfaces; Y is world-up, Z is best-guess at player-facing.
"best guess" = when on ceiling/floor, Z faces player; when on surface (desk/couch), Z faces closest edge to player