fix: the DatePicker border bug when the chose was century

[xrkffgg]

🤔 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

#17879

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	fix: the DatePicker border bug when the chose was century
🇨🇳 Chinese	DatePicker：修复当选择条件为世纪时，border 不对齐的样式 bug

☑️ 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

[netlify]

Deploy preview for ant-design ready!

Built with commit aa7f5fb

https://deploy-preview-17887--ant-design.netlify.com

[buildsize]

File name	Previous Size	New Size	Change
package-lock.json	855.38 KB	861.43 KB	6.05 KB (1%)

[codecov]

Codecov Report

Merging #17887 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #17887   +/-   ##
=======================================
  Coverage   96.06%   96.06%           
=======================================
  Files         268      268           
  Lines        7467     7467           
  Branches     2087     2087           
=======================================
  Hits         7173     7173           
  Misses        292      292           
  Partials        2        2

---

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 3e62daf...aa7f5fb. Read the comment docs.

[afc163]

Good job!

This problem exists in DatePicker too (the height of century panel header is 1px lower than other panels), could you help to fix it?

[xrkffgg]

@afc163 Hi 我修复的就是这个问题。DatePicker 里 选择条件是世纪的时候，hearder 像素底的问题。效果图如下：

修复前：

修复后：

[xrkffgg]

@afc163
又 commit 了一下，这次改动是，加上了 选择条件为 decade 时，border 调整。

第一种是都去掉了，然后都上移了 1px。

我想既然做了这样的定义，原设计师 应该是想要 使用下移 1px，所以调整为 世纪选择时，也下移 1px。

[afc163]

我的意思是，除了 RangePicker，DatePicker 里的世纪面板/年月面板也有这个 1px 的偏差问题，切换的时候能看出来抖动，方便的话可以帮忙一起修掉。😊

[xrkffgg]

@afc163 😂😂😂 一直在关注范围选取，单个的没注意到。没有比较，不仔细看，确实很容易忽略。