fix: Lots of Descriptions

[zombieJ]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

fix #20255

💡 Background and solution

计算逻辑有问题，官方的 Demo 计算也是错的。snapshot 也没测对。重写以修复：

• 非 bordered 时，label 不存在仍然会渲染 label 元素的问题
• vertical 下且非 bordered 标题也是 td 的问题
• vertical 且 bordered 布局混乱的问题
• style 无法作用于 Item 的问题
• border 下 th 还会额外获得无用的 -colon className 的问题

以及

• 使用 rc-util 处理 Fragment 嵌套

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Descriptions lots of issue.
🇨🇳 Chinese	修复 Descriptions 大量问题。

☑️ Self Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[tests-checker]

Could you please add tests to make sure this change works as expected?

[ant-design-bot]

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

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[codecov]

Codecov Report

Merging #21542 into master will decrease coverage by 0.03%.
The diff coverage is 98.83%.

@@            Coverage Diff             @@
##           master   #21542      +/-   ##
==========================================
- Coverage   97.83%    97.8%   -0.04%     
==========================================
  Files         302      304       +2     
  Lines        7029     7009      -20     
  Branches     1930     1931       +1     
==========================================
- Hits         6877     6855      -22     
- Misses        152      154       +2

Impacted Files	Coverage Δ
components/descriptions/Row.tsx	100% <100%> (ø)
components/descriptions/Cell.tsx	100% <100%> (ø)
components/descriptions/index.tsx	100% <100%> (+1.07%)	⬆️
components/descriptions/Item.tsx	50% <50%> (ø)
components/breadcrumb/Breadcrumb.tsx	93.54% <0%> (-3.23%)	⬇️

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[afc163]

changelog 有点含糊，可以列一列。

[afc163]

居然这么多问题，3.x 里修不？

[zombieJ]

3.x 里需要改成 class，可以修。

[zombieJ]

发现不知道 markdown table 里怎么换行……

[afc163]

| xx <br /> yy |

[chenshuai2144]

昨天试着用了这个黑科技，fatherdoc 直接挂了