fix(date-picker): showTime should work correctly when format is function

[kerm1it]

[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

close #27155

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	fix DatePicker don't work correctly when showTime is true and format is function.
🇨🇳 Chinese	修复当 showTime 为 true 并且 format 为一个函数时，DatePicker 报错问题。

☑️ 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]

[ant-design-bot]

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 0bc651e:

Sandbox	Source
antd reproduction template	Configuration
antd RangePicker showTIme with custom format	Issue #27155

[codecov]

Codecov Report

Merging #27156 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master    #27156   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          388       388           
  Lines         7392      7394    +2     
  Branches      2070      2071    +1     
=========================================
+ Hits          7392      7394    +2     

Impacted Files	Coverage Δ
components/date-picker/generatePicker/index.tsx	100.00% <100.00%> (ø)

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[github-actions]

Size Change: +16 B (0%)

Total Size: 791 kB

Filename	Size	Change
./dist/antd-with-locales.min.js	313 kB	+9 B (0%)
./dist/antd.min.js	277 kB	+7 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
./dist/antd.compact.min.css	66.3 kB	0 B
./dist/antd.dark.min.css	67.6 kB	0 B
./dist/antd.min.css	66.3 kB	0 B

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