chore: update tree demo

[lmmlala]

🤔 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(组件名称): 处理问题或特性描述 ...

• 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

[lmmlala]

@uyarn 快照已更新

[github-actions]

[uyarn]

看起来snapshot还是有问题喔

[lmmlala]

@uyarn 可以帮我看看吗

[codecov-commenter]

Codecov Report

Merging #1406 (057edbd) into develop (492d477) will increase coverage by 3.68%.
The diff coverage is 90.90%.

@@             Coverage Diff             @@
##           develop    #1406      +/-   ##
===========================================
+ Coverage    57.94%   61.63%   +3.68%     
===========================================
  Files          407      643     +236     
  Lines        15371    15738     +367     
  Branches      2931     2817     -114     
===========================================
+ Hits          8907     9700     +793     
+ Misses        6187     5747     -440     
- Partials       277      291      +14     

Impacted Files	Coverage Δ
src/alert/_example/icon.vue	100.00% <ø> (ø)
src/alert/_usage/index.vue	0.00% <ø> (ø)
src/anchor/_usage/index.vue	0.00% <ø> (ø)
src/avatar/_example/base.vue	100.00% <ø> (ø)
src/avatar/_usage/index.vue	0.00% <ø> (ø)
src/badge/_usage/index.vue	0.00% <ø> (ø)
src/breadcrumb/_example/custom.vue	100.00% <ø> (ø)
src/breadcrumb/_example/dropdown.vue	100.00% <ø> (ø)
src/button/_example/icon.vue	100.00% <ø> (ø)
src/button/_usage/index.vue	0.00% <ø> (ø)
... and 460 more

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[uyarn]

@uyarn 可以帮我看看吗

中秋没看 sorry