front: fix the number of loading states

[Khoyo]

Closes #8410.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.82%. Comparing base (432baa4) to head (c1b88c5).
Report is 100 commits behind head on dev.

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Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #9607      +/-   ##
==========================================
- Coverage   37.84%   37.82%   -0.02%     
==========================================
  Files         990      990              
  Lines       90918    90920       +2     
  Branches     1176     1176              
==========================================
- Hits        34411    34394      -17     
- Misses      56053    56072      +19     
  Partials      454      454              

Flag	Coverage Δ
editoast	73.21% <ø> (-0.07%)	⬇️
front	20.11% <ø> (ø)
gateway	2.18% <ø> (ø)
osrdyne	3.28% <ø> (ø)
railjson_generator	87.49% <ø> (ø)
tests	86.74% <ø> (ø)

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[emersion]

To avoid hardcoding this number in each locale, could we maybe pass it as argument?

But TBH there's nothing locale-specific here, so could we just drop that from translations maybe?

In any case, this LGTM.

[emersion]

Apparently my ramblings have been sent directly to /dev/null. I've been pressured into approving this.