Add undefined IFC type data - this is special to freecad and not part of the IFC spec

src/Mod/Arch/Presets/ifc_products_IFC2X3.json

@@ -4007,5 +4007,11 @@
             }
         ],
         "complex_attributes": []
+    },
+    "IfcUndefined": {
+        "is_abstract": false,
+        "parent": "IfcObject",
+        "attributes": [],
+        "complex_attributes": []
     }
-}
+}

src/Mod/Arch/Presets/ifc_products_IFC4.json

@@ -13265,5 +13265,11 @@
                 "type": "IfcProductRepresentation"
             }
         ]
+    },
+    "IfcUndefined": {
+        "is_abstract": false,
+        "parent": "IfcObject",
+        "attributes": [],
+        "complex_attributes": []
     }
-}
+}