fix: Modal 24px bottom area not trigger mask click

[afc163]

🤔 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?)

👻 What's the background?

close #17226

💡 Solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Modal 24px bottom area cannot trigger mask click event.
🇨🇳 Chinese	修复 Modal 底部 24px 像素遮罩区域无法触发关闭弹窗行为。

☑️ 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

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Codecov Report

❗ No coverage uploaded for pull request base (master@a4d7593). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #17229   +/-   ##
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  Coverage          ?   95.95%           
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  Files             ?      263           
  Lines             ?     7350           
  Branches          ?     2014           
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  Hits              ?     7053           
  Misses            ?      295           
  Partials          ?        2

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