Fix disabled download code button

What does this MR do and why?

Reslove #3861 (closed)

1. 解决「Pipeline 报错：无法关闭代码仓库的下载功能」。详情请查看上述 Issue。
2. 顺便解决另一个 Pipeline failed job：https://jihulab.com/gitlab-cn/gitlab/-/jobs/11740609

Screenshots or screen recordings

在勾选 后：

Before	After
按钮没有隐藏	按钮隐藏

How to set up and validate locally

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