Fix the business_path default value, there is exist a code which calls without the paramter.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@32476 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Rule.py

@@ -558,7 +558,7 @@ class Rule(Predicate, XMLObject):
                 movement.getRelativeUrl())
     return (add_list, modify_dict, delete_list)
 
-  def _getExpandablePropertyDict(self, applied_rule, movement, business_path,
+  def _getExpandablePropertyDict(self, applied_rule, movement, business_path=None,
       **kw):
     """
     Return a Dictionary with the Properties used to edit the simulation