style: add @text-color in dark

[xrkffgg]

[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
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

补充 #25630

📝 Changelog

Language	Changelog
🇺🇸 English	-
🇨🇳 Chinese	-

☑️ 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]

[07akioni]

why not 65%?

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[codecov]

Codecov Report

Merging #25923 into feature will increase coverage by 0.75%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           feature   #25923      +/-   ##
===========================================
+ Coverage    98.81%   99.57%   +0.75%     
===========================================
  Files          363      373      +10     
  Lines         7280     7309      +29     
  Branches      1967     2042      +75     
===========================================
+ Hits          7194     7278      +84     
+ Misses          86       31      -55     

Impacted Files	Coverage Δ
components/_util/easings.ts	100.00% <ø> (ø)
components/_util/usePatchElement.tsx	100.00% <ø> (ø)
components/affix/index.tsx	99.13% <ø> (ø)
components/checkbox/Checkbox.tsx	100.00% <ø> (ø)
components/config-provider/context.tsx	100.00% <ø> (ø)
...date-picker/generatePicker/generateRangePicker.tsx	100.00% <ø> (ø)
components/date-picker/locale/nb_NO.tsx	100.00% <ø> (ø)
components/date-picker/locale/tr_TR.tsx	100.00% <ø> (ø)
components/descriptions/Cell.tsx	100.00% <ø> (ø)
components/_util/motion.tsx	100.00% <100.00%> (ø)
... and 140 more

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[xrkffgg]

feature 的 default 已经改成 85 % 啦 https://github.com/ant-design/ant-design/pull/25630/files

[07akioni]

feature 的 default 已经改成 85 % 啦 https://github.com/ant-design/ant-design/pull/25630/files

那看来是缺乏同步，没问题了hhh

[xrkffgg]

来个 approve