fix(slider): fix floating point decimal precision

[fengT-T]

fix floating point decimal precision
修复 n-slider 的浮点数小数精度丢失

issue
close #751

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[Talljack]

rebase一下最新的main分支吧，很多文档的修改在里面

[fengT-T]

@Talljack 已经修改了。

[codecov]

Codecov Report

Merging #750 (a2837b0) into main (a1a3535) will increase coverage by 0.02%.
The diff coverage is 83.33%.

❗ Current head a2837b0 differs from pull request most recent head da4807b. Consider uploading reports for the commit da4807b to get more accurate results

@@            Coverage Diff             @@
##             main     #750      +/-   ##
==========================================
+ Coverage   39.58%   39.60%   +0.02%     
==========================================
  Files         507      507              
  Lines       12373    12379       +6     
  Branches     3467     3468       +1     
==========================================
+ Hits         4898     4903       +5     
  Misses       6566     6566              
- Partials      909      910       +1     

Impacted Files	Coverage Δ
src/slider/src/Slider.tsx	16.97% <83.33%> (+1.07%)	⬆️

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