refactor: hide unnecessary role template (#158)

隐藏不必要的角色模板。

<img width="574" alt="image" src="https://github.com/user-attachments/assets/d597abe3-c761-41f4-a91c-498009dc5fd1">

```release-note
隐藏不必要的角色模板。
```

Author: ruibaby

src/main/resources/extensions/role-templates.yaml

@@ -4,6 +4,7 @@ metadata:
   name: comment-widget-public-apis
   labels:
     halo.run/role-template: "true"
+    halo.run/hidden: "true"
     rbac.authorization.halo.run/aggregate-to-anonymous: "true"
   annotations:
     rbac.authorization.halo.run/module: "Comment Widget"