BIM: fix setting of self.Type

Fixes #21364.

`self.Type` should be set in `__init__` and `loads`, and not in `onDocumentRestored`.

Additionally:
fixed mistake in `loads` in ifc_objects.py.

src/Mod/BIM/nativeifc/ifc_objects.py

@@ -123,7 +123,7 @@ class ifc_object:
         the object references a Type that has a Classification property,
         so we move copy the Type's property to our actual object.
         """
-        
+
         if not getattr(obj, "Type", None):
             return
 
@@ -170,9 +170,8 @@ class ifc_object:
         return getattr(self, "Type", None)
 
     def loads(self, state):
-        if state and hasattr(state, "Type"):
+        if state:
             self.Type = state
-        return None
 
     def execute(self, obj):
         from . import ifc_generator  # lazy import