erp5/test: use ZPythonScript_edit instead of ZPythonScriptHTML_editAction

The later is not really supposed to be XML-RPC comptabible and it's
anyway to use ZPythonScript_edit

software/erp5/test/test/test_erp5.py

@@ -556,12 +556,7 @@ class ZopeSkinsMixin:
       except xmlrpc.client.ProtocolError as e:
         if e.errcode != 302:
           raise
-      getattr(custom, script_id).ZPythonScriptHTML_editAction(
-          '',
-          '',
-          params,
-          body,
-      )
+      getattr(custom, script_id).write(f'##parameters={params}\n\n{body}')
 
 
 class ZopeTestMixin(ZopeSkinsMixin, CrontabMixin):

software/erp5/upgrade_test/test.py

@@ -192,12 +192,7 @@ class TestERP5Upgrade(ERP5UpgradeTestCase):
         except xmlrpc.client.ProtocolError as e:
           if e.errcode != 302:
             raise
-        getattr(custom, script_id).ZPythonScriptHTML_editAction(
-          '',
-          '',
-          params,
-          body,
-        )
+        getattr(custom, script_id).write(f'##parameters={params}\n\n{body}')
 
     # a python script to create a person with a name
     addPythonScript(