fix: logo cannot be displayed after the build (#668)

#### What type of PR is this?

/kind bug
/milestone 2.0

#### What this PR does / why we need it:

修复在 `vite build` 之后无法加载 Logo 的问题。

#### Special notes for your reviewer:

测试方式：

1. `pnpm build`
2. `pnpm preview`
3. 检查登录页面的 Logo 是否正常加载。

#### Does this PR introduce a user-facing change?

```release-note
None
```