fix: button patch danger color

[fqishuai]

src/components/button/button.patch.less

&-danger {
background-color: #00b578;
border-color: #00b578;
&.@{class-prefix-button}-fill-outline,
&.@{class-prefix-button}-fill-none {
color: #00b578;
}
}

修改为：

&-danger {
background-color: #ff3141;
border-color: #ff3141;
&.@{class-prefix-button}-fill-outline,
&.@{class-prefix-button}-fill-none {
color: #ff3141;
}
}

[github-actions]

PR preview has been successfully built and deployed to https://antd-mobile-preview-pr-6568.surge.sh

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.34%. Comparing base (784eff5) to head (3ffec80).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6568   +/-   ##
=======================================
  Coverage   92.34%   92.34%           
=======================================
  Files         318      318           
  Lines        6910     6910           
  Branches     1729     1729           
=======================================
  Hits         6381     6381           
  Misses        493      493           
  Partials       36       36           

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