fix: remove optional chain on process.env.PUBLIC_URL

[Yggdrasilqh]

Summary by CodeRabbit

• Bug Fixes
  • 改进了 Footer 组件的错误处理，确保在获取 PUBLIC_URL 环境变量时更稳健，避免潜在的运行时错误。

[coderabbitai]

Walkthrough

此次更改主要集中在 src/components/Footer/Footer.tsx 中的 Footer 组件。代码通过引入 try-catch 块来改进对 PUBLIC_URL 环境变量的错误处理。之前直接访问 process?.env?.PUBLIC_URL，现在改为尝试将其赋值给 publicURL 变量。如果赋值失败，将记录一条控制台消息，并将 publicURL 默认设置为空字符串。fetch 调用的结构保持不变，但现在使用 publicURL 变量。

Changes

文件路径	变更摘要
src/components/Footer/Footer.tsx	改进 PUBLIC_URL 的错误处理，使用 try-catch 块，确保更稳健的代码。

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Footer
    participant Environment

    User->>Footer: 请求加载 Footer
    Footer->>Environment: 获取 PUBLIC_URL
    alt 成功获取
        Environment-->>Footer: 返回 PUBLIC_URL
    else 失败获取
        Footer->>Footer: 记录错误信息
        Footer->>Footer: 设置 publicURL 为 ""
    end
    Footer->>Footer: 执行 fetch 调用

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[coderabbitai]

Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI
Review profile: ASSERTIVE

📥 Commits

Reviewing files that changed from the base of the PR and between 6ec037c and 3f1358e.

📒 Files selected for processing (1)

• src/components/Footer/Footer.tsx (1 hunks)

🔇 Additional comments (1)

src/components/Footer/Footer.tsx (1)

18-19: 代码结构清晰！

变量声明和初始化的方式很规范，空行的使用提高了代码的可读性。