Fix the bug which mae impossible to change skins inside an activity.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19138 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/CMFActivity/ActivityTool.py

@@ -789,6 +789,9 @@ class ActivityTool (Folder, UniqueObject):
         my_self = self
         LOG('CMFActivity.ActivityTool.invoke', INFO, 'Strange: invoke is called outside of acquisition context.')
       message(my_self)
+      if my_self is not self: # We rewrapped self
+        for held in my_self.REQUEST._held:
+          self.REQUEST._hold(held)
 
     def invokeGroup(self, method_id, message_list):
       # Invoke a group method.