fix: Don't non-null assertion

[yoyo837]

🤔 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

close #22094

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English
🇨🇳 Chinese	修复 Table 筛选功能抛出 Cannot read property 'map' of undefined 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

[ant-design-bot]

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[codecov]

Codecov Report

Merging #22096 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #22096      +/-   ##
==========================================
+ Coverage   97.96%   97.96%   +<.01%     
==========================================
  Files         306      306              
  Lines        7041     7042       +1     
  Branches     1928     1939      +11     
==========================================
+ Hits         6898     6899       +1     
  Misses        143      143

Impacted Files	Coverage Δ
...omponents/table/hooks/useFilter/FilterDropdown.tsx	95.89% <100%> (+0.05%)	⬆️

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[afc163]

Changelog 按用户视角写一下。

[yoyo837]

Changelog 按用户视角写一下。

改了下

[afc163]

修复table筛选功能，对filters的使用可能未赋值的运行时错误

修复 Table 筛选功能抛出 Cannot read property 'map' of undefined 的问题。

[yoyo837]

修复table筛选功能，对filters的使用可能未赋值的运行时错误

修复 Table 筛选功能抛出 Cannot read property 'map' of undefined 的问题。

👌

[collinbarrett]

Wow, that was fast. Looking forward to testing this fix in the next release. Thanks.