fix: draggable Modal should have boundary

[mumiao]

[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
• Branch merge
• Other (about what?)

🔗 Related issue link

fix #28438

💡 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/modal/demo/modal-render.md

[mumiao]

@yoyo837 @afc163 那个pr分支混杂了别的commits 我重新提到这里来

[ant-design-bot]

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

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Latest deployment of this branch, based on commit 28ecd41:

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antd reproduction template	Configuration

[github-actions]

Size Change: -21 B (0%)

Total Size: 793 kB

Filename	Size	Change
./dist/antd.compact.min.css	66.7 kB	-8 B (0%)
./dist/antd.dark.min.css	68 kB	-5 B (0%)
./dist/antd.min.css	66.7 kB	-8 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
./dist/antd-with-locales.min.js	314 kB	0 B
./dist/antd.min.js	277 kB	0 B

_{compressed-size-action}

[yoyo837]

窗口resize后，依然可以拖拽到外面

[mumiao]

窗口resize后，依然可以拖拽到外面

done

[yoyo837]

@xrkffgg 这个CI failed和 改动的action 有关系不？

[xrkffgg]

@xrkffgg 这个CI failed和 改动的action 有关系不？

没关系

[mumiao]

@afc163 @yoyo837 CI 报错跟我此次提交没有关系。 review一下看看？