fix #7537 - Layer thickness correct when slab is rotated and few other features...

- Add dual-rotation support for AXIS3 slabs (IFC angle + object rotation)
- Fix profile editing to display horizontal projection for tilted slabs
- Fix AXIS2 layer slicing to use local extrusion direction for walls
- Fix ChangeExtrusionDepth to refresh geometry after depth changes
- Remove rotation lock on slabs to allow free rotation
- Fix undefined variable bug in add_slab_representation.py

src/ifcopenshell-python/ifcopenshell/api/geometry/add_wall_representation.py

@@ -85,7 +85,6 @@ class Usecase:
     def create_item(self) -> ifcopenshell.entity_instance:
         length = self.convert_si_to_unit(self.settings["length"])
         thickness = self.convert_si_to_unit(self.settings["thickness"])
-        thickness *= 1 / cos(self.settings["x_angle"])
         if self.settings["direction_sense"] == "NEGATIVE":
             thickness *= -1
         points = (
@@ -113,7 +112,7 @@ class Usecase:
                 self.file.createIfcDirection((1.0, 0.0, 0.0)),
             ),
             extrusion_direction,
-            self.convert_si_to_unit(self.settings["height"]) * abs(1 / cos(self.settings["x_angle"])),
+            self.convert_si_to_unit(self.settings["height"]),
         )
         if self.settings["booleans"]:
             extrusion = self.apply_booleans(extrusion)