fix(table): 表格宽度计算函数添加注释

[ZTao-z]

🤔 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

#1225

💡 需求背景和解决方案

1. 添加注释

📝 更新日志

• fix(table): 宽度计算函数添加注释

• 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

[codecov-commenter]

Codecov Report

Merging #1286 (22beb54) into develop (492d477) will increase coverage by 0.24%.
The diff coverage is 40.76%.

@@             Coverage Diff             @@
##           develop    #1286      +/-   ##
===========================================
+ Coverage    57.94%   58.19%   +0.24%     
===========================================
  Files          407      408       +1     
  Lines        15371    15300      -71     
  Branches      2931     2886      -45     
===========================================
- Hits          8907     8904       -3     
+ Misses        6187     6120      -67     
+ Partials       277      276       -1     

Impacted Files	Coverage Δ
src/cascader/cascader.tsx	64.00% <ø> (ø)
src/color-picker/color-picker.tsx	81.25% <ø> (ø)
src/date-picker/DatePicker.tsx	26.74% <ø> (ø)
src/date-picker/DateRangePicker.tsx	15.82% <ø> (ø)
src/date-picker/base/Header.tsx	7.57% <0.00%> (-0.37%)	⬇️
src/date-picker/date-picker-panel-props.ts	100.00% <ø> (+90.00%)	⬆️
src/date-picker/date-range-picker-panel-props.ts	100.00% <ø> (+90.90%)	⬆️
src/date-picker/date-range-picker-props.ts	42.85% <0.00%> (-11.69%)	⬇️
src/date-picker/hooks/useRange.ts	35.89% <ø> (ø)
src/date-picker/hooks/useSingle.ts	37.28% <ø> (ø)
... and 46 more

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