erp5_trade: Auto Plan Transition is a "WorkflowMethod" for consistency

bt5/erp5_trade/WorkflowTemplateItem/portal_workflow/order_workflow/transitions/auto_plan.xml

@@ -10,6 +10,10 @@
             <key> <string>actbox_category</string> </key>
             <value> <string>workflow</string> </value>
         </item>
+        <item>
+            <key> <string>actbox_icon</string> </key>
+            <value> <string></string> </value>
+        </item>
         <item>
             <key> <string>actbox_name</string> </key>
             <value> <string></string> </value>
@@ -50,7 +54,7 @@
         </item>
         <item>
             <key> <string>trigger_type</string> </key>
-            <value> <int>1</int> </value>
+            <value> <int>2</int> </value>
         </item>
       </dictionary>
     </pickle>