【许可证】清空后模型详情页面侧边栏许可证字段取值显示空

对添加了许可证的模型，删除许可证后查看模型介绍页面侧边栏，许可证字段取值显示空。
需求是：没有内容时显示“--”

Deleting a branch is permanent. It CANNOT be undone. Continue?

Dear OpenI User

Thank you for your continuous support to the Openl Qizhi Community AI Collaboration Platform. In order to protect your usage rights and ensure network security, we updated the Openl Qizhi Community AI Collaboration Platform Usage Agreement in January 2024. The updated agreement specifies that users are prohibited from using intranet penetration tools. After you click "Agree and continue", you can continue to use our services. Thank you for your cooperation and understanding.

For more agreement content, please refer to the《Openl Qizhi Community AI Collaboration Platform Usage Agreement》

#4587 【许可证】清空后模型详情页面侧边栏许可证字段取值显示空