feat: empty simple in dark theme

[MadCcc]

[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

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Optimize Empty svg color in dark theme.
🇨🇳 Chinese	优化 Empty 组件的 svg 图片在暗色主题下的颜色。

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• 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

[github-actions]

[github-actions]

Size Change: +305 B (0%)

Total Size: 901 kB

Filename	Size	Change
./dist/antd-with-locales.min.js	479 kB	+152 B (0%)
./dist/antd.min.js	421 kB	+153 B (0%)

_{compressed-size-action}

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (6d82f6a) compared to base (153f232).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #38785   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          544       544           
  Lines         9350      9359    +9     
  Branches      2649      2654    +5     
=========================================
+ Hits          9350      9359    +9     

Impacted Files	Coverage Δ
components/empty/simple.tsx	100.00% <100.00%> (ø)
components/menu/style/theme.tsx	100.00% <0.00%> (ø)

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