fix(breadcrumb): 面包屑初始样式被覆盖

[yatessss]

(cherry picked from commit 2d260ea)

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 演示代码改进
• 组件样式/交互改进
• CI/CD 改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他

🔗 相关 Issue

💡 需求背景和解决方案

📝 更新日志

• fix(breadcrumb): 面包屑初始样式被覆盖

• 本条 PR 不需要纳入 Changelog

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
• 代码演示已提供或无须提供
• TypeScript 定义已补充或无须补充
• Changelog 已提供或无须提供

[carolin913]

breadCrumb外层也有同样问题，麻烦一并改下

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (develop@3b82c6d). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             develop     #618   +/-   ##
==========================================
  Coverage           ?   64.39%           
==========================================
  Files              ?      725           
  Lines              ?    12636           
  Branches           ?     3024           
==========================================
  Hits               ?     8137           
  Misses             ?     4499           
  Partials           ?        0           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3b82c6d...cab8450. Read the comment docs.

[github-actions]