2223d995fc
The first commit ensures IsectBoxes are not set up unless they are valid. The second commit renames `drw_bounds_are_valid` to `drw_bounds_corners_are_valid`, and `drw_bounds_culling_enabled` to `drw_bounds_are_valid` so it's harder to set up an invalid `IsectBox` by mistake. (Continuation of #127807) Pull Request: https://projects.blender.org/blender/blender/pulls/128125