style(table): table style and popconfirm demo style

[zhangpaopao0609]

🤔 这个 PR 的性质是？

• 组件样式/交互改进

🔗 相关 Issue

组件【Popconfirm 气泡确认框】样式优化: Tencent/tdesign#191
组件【Table 表格】样式优化: Tencent/tdesign#189

💡 需求背景和解决方案

样式优化

📝 更新日志

• style(Table): Table 以及 Popconfirm 样式优化

• 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 #1388 (63cb5e7) into develop (492d477) will increase coverage by 0.08%.
The diff coverage is 81.25%.

@@             Coverage Diff             @@
##           develop    #1388      +/-   ##
===========================================
+ Coverage    57.94%   58.02%   +0.08%     
===========================================
  Files          407      415       +8     
  Lines        15371    15520     +149     
  Branches      2931     2945      +14     
===========================================
+ Hits          8907     9006      +99     
- Misses        6187     6244      +57     
+ Partials       277      270       -7     

Impacted Files	Coverage Δ
src/button/props.ts	84.61% <0.00%> (-15.39%)	⬇️
src/calendar/const.ts	100.00% <ø> (ø)
src/cascader/cascader.tsx	64.00% <ø> (ø)
src/color-picker/color-picker.tsx	81.25% <ø> (ø)
src/color-picker/panel/header.tsx	69.56% <ø> (-1.27%)	⬇️
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)
... and 176 more

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