fix: avoid Jinja dict method collisions in admin templates

tests/test_employee_detail_template.py

@@ -9,6 +9,8 @@ def test_employee_detail_template_is_human_readable():
     assert ">Tabs<" not in template
     assert "contacts.items" not in template
     assert "contacts.contact_items" in template
+    assert "section.items" not in template
+    assert "section.list_items" in template
     assert "Основная информация" in template
     assert "Контакты" in template
     assert "Разделы профиля" in template