web_ung_code: Add valid viewer for Web Illustration

Use WebPage_viewAsWeb instead of WebIllustration_viewEditor

bt5/erp5_web_ung_core/ActionTemplateItem/portal_types/Web%20Illustration/web_view.xml

@@ -73,7 +73,7 @@
       <dictionary>
         <item>
             <key> <string>text</string> </key>
-            <value> <string>string:${object_url}/WebIllustration_viewEditor</string> </value>
+            <value> <string>string:${object_url}/WebPage_viewAsWeb</string> </value>
         </item>
       </dictionary>
     </pickle>