fix: defaultExpandAllRows should work with childrenColumnName

[zombieJ]

fix ant-design/ant-design#21788

[vercel]

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[codecov]

Codecov Report

Merging #424 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #424   +/-   ##
=======================================
  Coverage   99.83%   99.83%           
=======================================
  Files          21       21           
  Lines         601      601           
  Branches      167      167           
=======================================
  Hits          600      600           
  Misses          1        1

Impacted Files	Coverage Δ
src/utils/expandUtil.tsx	100% <100%> (ø)	⬆️
src/Table.tsx	100% <100%> (ø)	⬆️

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