test(web): carry the plugin-config nav item into the models-settings golden

Master regenerated this dialog golden on its own side, where the section does
not exist; the refreshed file differs from it by exactly the one nav row.

apps/web/tests/snapshots/models-settings/declared-edit.expected.md

@@ -10,6 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
+    - button "插件配置":
+      - img
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img