* packing_list_workflow/transitions/stop_action: disable stop_action from confirmed state on a Sale Packing List, as start transition after script calls the builder, and the default config shouldn't allow bypassing it.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19299 20353a03-c40f-0410-a6d1-a30d3c3de9de