3a81bde896
USD Meshes and their UsdGeomSubset prims only support "face" element types but our importer was not checking to ensure this was the case. Additionally, we should guard against out of range indices being used in general. Both situations will now also print an obvious warning level log statement allowing technical users to better toubleshoot on their own. Test coverage will be added separately in the near future to ensure multi-material scenarios are handled correctly. Pull Request: https://projects.blender.org/blender/blender/pulls/126714