workflows: do not lose form action id in XML export/imports (#50013)

tests/test_workflow_import.py

@@ -267,6 +267,10 @@ def test_display_form_action(pub):
     # formdef.max_field_id is recalculated when importing a FormWorkflowStatusItem
     assert wf2.possible_status[0].items[0].formdef.max_field_id == len(display_form.formdef.fields)
 
+    # check action id is not lost when using include_id
+    wf2 = assert_import_export_works(wf, include_id=True)
+    assert wf2.possible_status[0].items[0].id == display_form.id
+
 
 def test_export_to_model_action(pub):
     wf = Workflow(name='status')

wcs/wf/form.py

@@ -140,7 +140,9 @@ class FormWorkflowStatusItem(WorkflowStatusItem):
         return item
 
     def init_with_xml(self, elem, charset, include_id=False, snapshot=False, check_datasources=True):
-        WorkflowStatusItem.init_with_xml(self, elem, charset)
+        super().init_with_xml(elem, charset,
+                include_id=include_id, snapshot=snapshot,
+                check_datasources=check_datasources)
         el = elem.find('formdef')
         if el is None:
             return