fix: add opacity transition

[ajuner]

fix ant-design/ant-design#28767

[vercel]

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[yoyo837]

CI failed

[xrkffgg]

rebase 下

[xrkffgg]

更新下 snap

[codecov]

Codecov Report

Merging #96 (4419bbe) into master (f63a0ca) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #96   +/-   ##
=======================================
  Coverage   99.14%   99.14%           
=======================================
  Files           3        3           
  Lines         117      117           
  Branches       30       30           
=======================================
  Hits          116      116           
  Misses          1        1           

Impacted Files	Coverage Δ
src/Circle.tsx	100.00% <ø> (ø)

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[xrkffgg]

不着急，我改个东西，一会再 rebase 下，demo 加了点覆盖

[xrkffgg]

改好了，再 rebase 下