fix: Banner中的资源失效

[Alexzjt]

fix: #178
fix: #151

[gemini-code-assist]

Summary of Changes

Hello @Alexzjt, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

此拉取请求主要旨在解决 Banner 中资源失效的问题，并通过动态获取数据源 URL 来确保其稳定性。同时，还对 Banner 的布局样式进行了优化，使其在不同屏幕尺寸下表现更佳，并清理了部分冗余代码，提升了代码质量。

Highlights

• 修复 Banner 资源失效问题: 将 Banner 消息数据的获取 URL 从硬编码改为使用 getBaseSiteDataUrl() 动态生成，解决了资源失效的问题。
• 优化 Banner 布局样式: 调整了 div.listContainer 的 CSS 样式，移除了绝对定位，改为使用 80vw 宽度和 margin: auto 进行居中，并为超宽屏幕添加了特定宽度。
• 代码清理: 移除了 Banner.tsx 中不再使用的 ActiveIcon 导入，并删除了注释掉的旧版按钮 JSX 代码。

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[gemini-code-assist]

Code Review

这个 PR 通过将硬编码的 URL 替换为动态 URL，修复了 Banner 中资源失效的问题。此外，还重构了 CSS 以改善布局，并移除了一些无用代码。这些改动看起来不错。我只提了一个建议，通过添加错误处理来增强数据获取逻辑的健壮性。