front: fix typo in classname

[RomainValls]

close #9594

I've let a typo in the previous feature fixing it.

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.81%. Comparing base (6580cfe) to head (84cea88).
Report is 1 commits behind head on dev.

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Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #10096      +/-   ##
==========================================
- Coverage   79.83%   79.81%   -0.02%     
==========================================
  Files        1054     1054              
  Lines      105547   105547              
  Branches      726      726              
==========================================
- Hits        84262    84241      -21     
- Misses      21243    21264      +21     
  Partials       42       42              

Flag	Coverage Δ
editoast	73.68% <ø> (-0.07%)	⬇️
front	89.14% <100.00%> (ø)
gateway	2.18% <ø> (ø)
osrdyne	3.28% <ø> (ø)
railjson_generator	87.50% <ø> (ø)
tests	87.00% <ø> (ø)

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[theocrsb]

This is a detail, but perhaps we could call the import-invalid-stepnb class to match the parent.
But otherwise the PR works fine :)

[RomainValls]

This is a detail, but perhaps we could call the import-invalid-stepnb class to match the parent. But otherwise the PR works fine :)

I agree ! But I remember @clarani requested this change in the last pull request i sent. What do you think @clarani ?

[clarani]

Yes I think it's easier to read like this, we should rather change the parent class :)