'X angle' rotates ifcslab/ifcramp in space. (#2522)

* 'X angle' rotates ifcslab/ifcramp in space.

* rotation w/ mathutils.Matrix.Rotation instead
per https://github.com/IfcOpenShell/IfcOpenShell/pull/2522#issuecomment-1287969832

src/blenderbim/blenderbim/bim/module/model/slab.py

@@ -176,6 +176,8 @@ class DumbSlabGenerator:
             obj.matrix_world = matrix_world
             bpy.context.view_layer.update()
             self.collection.objects.link(obj)
+            rotation = mathutils.Matrix.Rotation(self.x_angle, 4, 'X')
+            obj.matrix_world = rotation
 
         element = blenderbim.core.root.assign_class(
             tool.Ifc,

src/blenderbim/blenderbim/bim/module/model/wall.py

@@ -278,6 +278,8 @@ class ChangeExtrusionXAngle(bpy.types.Operator, tool.Ifc.Operator):
                     is_global=True,
                     should_sync_changes_first=False,
                 )
+                rotation = mathutils.Matrix.Rotation(x_angle, 4, 'X')
+                obj.matrix_world = rotation
         if wall_objs:
             DumbWallRecalculator().recalculate(wall_objs)
         return {"FINISHED"}