docs: DatePicker demo refactor

[07akioni]

[中文版模板 / Chinese template]

🤔 This is a ...

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

🔗 Related issue link

Add a demo in which DatePicker type can be changed.
更新一个可修改类型的 Demo

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese

☑️ 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

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View rendered components/date-picker/demo/change-type.md

[ant-design-bot]

[ant-design-bot]

[xrkffgg]

用 Space 吧，TypeSelect 用 marginRight ，在 RTL 下样式又不太好了。

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[codecov]

Codecov Report

Merging #25913 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #25913   +/-   ##
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  Coverage   99.57%   99.57%           
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  Files         373      373           
  Lines        7307     7307           
  Branches     2032     1991   -41     
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  Hits         7276     7276           
  Misses         31       31           

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[zombieJ]

可以合并到 basic demo 中

[github-actions]

Size Change: +127 B (0%)

Total Size: 1.83 MB

Filename	Size	Change
dist/antd-with-locales.js	637 kB	+34 B (0%)
dist/antd-with-locales.min.js	311 kB	+28 B (0%)
dist/antd.js	595 kB	+41 B (0%)
dist/antd.min.js	279 kB	+24 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
dist/compact-theme.js	120 B	0 B
dist/dark-theme.js	118 B	0 B
dist/default-theme.js	7.21 kB	0 B
dist/theme.js	4.14 kB	0 B

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