Two fixes for space generation:
1. IFC2X3 schema: build_brep_space now falls back to plain
IfcRelSpaceBoundary because IfcRelSpaceBoundary1stLevel does not exist in
IFC2X3.
2. Geometry location: set_space_representation_from_polygon now aligns the
IFC ObjectPlacement with the Blender object, converts base_z/planes and
the footprint polygon to the object's local coordinate system before
building, and fixes the base_z unit scale. The centred-cube regeneration
test was updated to check world bounds because the mesh is now placed
relative to the object placement.
Generated with the assistance of an AI coding tool.
CyrilWaechter
fb3cd09d6d