fix: wrong index in tree table

[crawler-django]

fix ant-design/ant-design#33056
例子subTree, render索引正常了

[vercel]

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[codecov]

Codecov Report

Merging #707 (6fed694) into master (3cb4d10) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #707   +/-   ##
=======================================
  Coverage   99.67%   99.67%           
=======================================
  Files          32       32           
  Lines         935      935           
  Branches      284      284           
=======================================
  Hits          932      932           
  Misses          3        3           

Impacted Files	Coverage Δ
src/Body/index.tsx	100.00% <100.00%> (ø)
src/hooks/useFlattenRecords.ts	100.00% <100.00%> (ø)

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[afc163]

加个用例

[crawler-django]

看看这个测试用例可以吗?
我不太会写测试用例