don't call workflow method if transition is not available

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28078 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting_ui_test/SkinTemplateItem/portal_skins/erp5_accounting_ui_test/AccountingZuite_reset.xml

@@ -57,6 +57,7 @@
 \n
 # validate rules\n
 for rule in portal.portal_rules.objectValues():\n
+  if rule.getValidationState() != \'validated\':\n
     rule.validate()\n
 \n
 # open all accounts\n

bt5/erp5_accounting_ui_test/bt/revision

-130
+132
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