fix: Desctiption miss style when value is number 0

[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 #21899

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Descriptions miss style when content is falsy.
🇨🇳 Chinese	修复 Descriptions 内容为 falsy 值时样式丢失的问题。

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• 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]

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[codesandbox-ci]

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[codecov]

Codecov Report

Merging #21901 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #21901      +/-   ##
==========================================
+ Coverage   97.96%   97.96%   +<.01%     
==========================================
  Files         305      305              
  Lines        7011     7013       +2     
  Branches     1886     1887       +1     
==========================================
+ Hits         6868     6870       +2     
  Misses        143      143

Impacted Files	Coverage Δ
components/descriptions/Cell.tsx	100% <100%> (ø)	⬆️

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