a bit faster renaming ifc elements when renaming blender objects

Previously when you renamed blender object it was requiring the "Ifc.../" prefix so it would also change the name for ifc element. So when you wanted to rename something you'd only select and change the name part without prefix.

Now you can just type the name right in after using F2 which seems a bit quicker by a few less clicks.

Before - https://imgur.com/a/Rn7a17W
After - https://imgur.com/a/a3lmxte

src/blenderbim/blenderbim/bim/handler.py

@@ -73,17 +73,27 @@ def name_callback(obj, data):
         refresh_ui_data()
         return
 
-    if not obj.BIMObjectProperties.ifc_definition_id or "/" not in obj.name:
+    if not obj.BIMObjectProperties.ifc_definition_id:
         return
+
     element = IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id)
+    if "/" in obj.name:
+        object_name = obj.name
+        element_name = obj.name.split("/", 1)[1]
+    else:
+        element_name = obj.name
+        object_name = element.is_a() + f"/{element_name}"
+        obj.name = object_name  # NOTE: doesn't trigger infinite recursion
+
     if element.is_a("IfcGridAxis"):
-        element.AxisTag = obj.name.split("/")[1]
+        element.AxisTag = object_name.split("/")[1]
         refresh_ui_data()
+
     if not element.is_a("IfcRoot"):
         return
+    element.Name = element_name
     if obj.BIMObjectProperties.collection:
-        obj.BIMObjectProperties.collection.name = obj.name
-    element.Name = "/".join(obj.name.split("/")[1:])
+        obj.BIMObjectProperties.collection.name = object_name
     refresh_ui_data()