fix: InputNumber的onChange的value的类型增加null

[lengfangbing]

[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
• Enhancement feature
• Internationalization
• Refactoring
• Code style optimization
• Test Case
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• Other (about what?)

fix #28759

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Add onChange's value typescript definition null for InputNumber
🇨🇳 Chinese	InputNumber组件的onChange的value的类型增加null

☑️ 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/input-number/index.en-US.md
View rendered components/input-number/index.zh-CN.md

[ant-design-bot]

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基本 - [email protected]	Issue #28759

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Size Change: 0 B

Total Size: 793 kB

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Filename	Size	Change
./dist/antd-with-locales.min.js	315 kB	0 B
./dist/antd.compact.min.css	66.9 kB	0 B
./dist/antd.dark.min.css	68.1 kB	0 B
./dist/antd.min.css	66.9 kB	0 B
./dist/antd.min.js	276 kB	0 B

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