fix: should handle key and path of nested grouped array with nestedIndex

[pionxzh]

closes #419

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1a757e8) 87.93% compared to head (adcf08b) 87.95%.
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #420      +/-   ##
==========================================
+ Coverage   87.93%   87.95%   +0.02%     
==========================================
  Files          25       25              
  Lines        2387     2391       +4     
  Branches      379      382       +3     
==========================================
+ Hits         2099     2103       +4     
  Misses        287      287              
  Partials        1        1              

Files	Coverage Δ
src/components/DataKeyPair.tsx	65.01% <100.00%> (+0.10%)	⬆️
src/components/DataTypes/Object.tsx	87.94% <100.00%> (+0.07%)	⬆️
src/type.ts	100.00% <100.00%> (ø)

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