xhtml_style: make standard_error_message_render compatible with Zope4

In Zope4 error_message is not passed and http exceptions are callable,
but not with required positional arguments.

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_xhtml_style/standard_error_message_render.zpt

@@ -4,13 +4,13 @@
   xmlns:i18n="http://xml.zope.org/namespaces/i18n"
   metal:define-macro="standard_error_message_render"
 >
-<div tal:condition="options/error_message" tal:content="structure options/error_message" />
-<div tal:condition="not: options/error_message">
+<div tal:condition="python: options.get('error_message')" tal:content="structure options/error_message" />
+<div tal:condition="python: not options.get('error_message')">
   <h2 i18n:translate="">Site Error</h2>
   <p i18n:translate="">An error was encountered while publishing this resource.</p>
   <p>
-    <strong i18n:translate="">Error Type: <span tal:replace="options/error_type" i18n:name="error_type" /></strong><br />
-    <strong i18n:translate="">Error Value: <span tal:replace="options/error_value" i18n:name="error_value" /></strong><br />
+    <strong i18n:translate="">Error Type: <span tal:replace="python: options['error_type']" i18n:name="error_type" /></strong><br />
+    <strong i18n:translate="">Error Value: <span tal:replace="python: options['error_value']" i18n:name="error_value" /></strong><br />
   </p>
   <hr noshade="noshade" />
   <p i18n:translate="">Troubleshooting Suggestions</p>