fix: Calendar header select ellipsis bug

[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?)

🔗 Related issue link

close #22123

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Calendar header select ellipsis bug.
🇨🇳 Chinese	修复 Calendar 年月选择菜单内容被省略的问题。

☑️ 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]

[afc163]

@zombieJ 对于这种不设宽度的 Select 上面能展示，下拉框内展示不完整的情况，是不是可以调整调整下默认宽度，尽量让用户不用操心。

https://codesandbox.io/s/quirky-dewdney-3vfl3

[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 cd60f0c:

Sandbox	Source
antd reproduction template	Configuration

[codecov]

Codecov Report

Merging #22148 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22148   +/-   ##
=======================================
  Coverage   97.96%   97.96%           
=======================================
  Files         306      306           
  Lines        7042     7042           
  Branches     1939     1939           
=======================================
  Hits         6899     6899           
  Misses        143      143

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f44f6f3...cd60f0c. Read the comment docs.