backoffice: fix display of stats filtered on invalid status (#43081)

wcs/backoffice/management.py

@@ -2288,6 +2288,7 @@ class FormPage(Directory):
                 self.get_stats_sidebar(selected_filter)
         do_graphs = get_publisher().is_using_postgresql()
 
+        displayed_criterias = None
         if selected_filter and selected_filter != 'all':
             if selected_filter == 'pending':
                 applied_filters = ['wf-%s' % x.id for x in
@@ -2308,7 +2309,8 @@ class FormPage(Directory):
                 criterias.append(Or([Equal('status', x) for x in applied_filters]))
                 criterias[-1]._label = criteria_label
                 displayed_criterias = criterias
-        else:
+
+        if not displayed_criterias:
             displayed_criterias = criterias
             criterias = [NotEqual('status', 'draft')] + displayed_criterias