fix(select): option设置content未生效

[carolin913]

🤔 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(select): option设置content未生效问题

• feat(collapse): 增加live demo演示

• [] 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

[github-actions]

[codecov-commenter]

Codecov Report

Merging #1383 (f55dc61) into develop (8a9ef3a) will increase coverage by 0.69%.
The diff coverage is 45.65%.

@@             Coverage Diff             @@
##           develop    #1383      +/-   ##
===========================================
+ Coverage    61.00%   61.69%   +0.69%     
===========================================
  Files         1030     1031       +1     
  Lines        17933    17957      +24     
  Branches      4121     4127       +6     
===========================================
+ Hits         10940    11079     +139     
+ Misses        6993     6878     -115     

Impacted Files	Coverage Δ
src/alert/_example/operation.jsx	60.00% <0.00%> (-40.00%)	⬇️
src/collapse/_usage/index.jsx	0.00% <0.00%> (ø)
src/config-provider/_example/global.jsx	100.00% <ø> (ø)
src/message/_example/close-function.jsx	41.66% <ø> (ø)
src/popconfirm/_example/describe.jsx	100.00% <ø> (ø)
src/select/_example/base.jsx	80.00% <ø> (ø)
src/select/base/PopupContent.tsx	90.00% <ø> (ø)
src/upload/upload.tsx	28.17% <30.00%> (+0.57%)	⬆️
src/collapse/CollapsePanel.tsx	89.79% <57.14%> (+12.52%)	⬆️
src/alert/Alert.tsx	97.67% <100.00%> (+0.11%)	⬆️
... and 15 more

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