Non modifying version of `BKE_mesh_validate`, mirrors `DM_is_valid` more closely. Will be used in port of `mesh_calc_modifiers` from `DerivedMesh` to `Mesh`.
Non modifying version of `BKE_mesh_validate`, mirrors `DM_is_valid` more closely. Will be used in port of `mesh_calc_modifiers` from `DerivedMesh` to `Mesh`.