docs: release 3.19.7

[afc163]

• 🐞 Fix Descriptions throw error when contains falsy child. #17207 @superandrew213
• 🐞 Fix a scrollbar style problem of empty Table in IE. #17223
• 🐞 Fix single Breadcrumb not showing on PageHeader. #17209
• 🐞 Fix Modal that 24px botton area cannot trigger mask click event. #17229
• 🐞 Fix Layout Sider‘s zero-width trigger z-index bug. #17228
• TypeScript
  • ⚡️ Use the unknown type in typescript 3.0 to improve defintions. #14044 @Zzzen
  • 🐞 Fix Calendar headerRender should be optional. #17063 @wonderjar

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• 🐞 修复 Descriptions 内无法嵌套空值的问题。#17207 @superandrew213
• 🐞 修复 Table 空数据表格在 IE 下的一个滚动条样式问题。#17223
• 🐞 修复单个 Breadcrumb 未在 PageHeader 上显示的问题。#17209
• 🐞 修复 Modal 底部 24px 像素遮罩区域无法触发关闭弹窗行为。#17229
• 🐞 修复 Layout Sider 的展开按钮 z-index 太低的问题。#17228
• TypeScript
  • ⚡️ 使用 unknown 代替 any 优化 TypeScript 定义。#14044 @Zzzen
  • 🐞 修复 Calendar headerRender 属性为可选。#17063 @wonderjar

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[codecov]

Codecov Report

Merging #17227 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #17227      +/-   ##
==========================================
- Coverage   95.95%   95.95%   -0.01%     
==========================================
  Files         263      263              
  Lines        7351     7350       -1     
  Branches     2053     2041      -12     
==========================================
- Hits         7054     7053       -1     
  Misses        295      295              
  Partials        2        2

Impacted Files	Coverage Δ
components/mention/index.tsx	91.83% <0%> (-0.17%)	⬇️
components/tree-select/index.tsx	95.55% <0%> (ø)	⬆️
components/calendar/Header.tsx	96.84% <0%> (ø)	⬆️
components/form/Form.tsx	91.3% <0%> (ø)	⬆️
components/calendar/index.tsx	96.73% <0%> (ø)	⬆️
components/modal/Modal.tsx	100% <0%> (ø)	⬆️
components/select/index.tsx	96.87% <0%> (ø)	⬆️
components/_util/interopDefault.ts	100% <0%> (ø)	⬆️

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