fix: Row Detail with inner grids

[ghiscoding]

fixes #1078

[stackblitz]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (a18236b) to head (6b0cabc).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #1535   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines         1027      1039   +12     
  Branches       372       392   +20     
=========================================
+ Hits          1027      1039   +12     

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