front: fix psl announcement first value

[Tguisnet]

Close #4466
Close #5940

[codecov]

Codecov Report

Attention: 54 lines in your changes are missing coverage. Please review.

Comparison is base (69d6902) 25.74% compared to head (8a39fcc) 25.73%.

Files	Patch %	Lines
...tools/rangeEdition/speedSection/EditPSLSection.tsx	0.00%	50 Missing and 1 partial ⚠️
...lications/editor/tools/rangeEdition/components.tsx	0.00%	2 Missing ⚠️
...or/tools/rangeEdition/speedSection/PslSignCard.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #5939      +/-   ##
============================================
- Coverage     25.74%   25.73%   -0.01%     
  Complexity     2117     2117              
============================================
  Files           926      926              
  Lines        122479   122524      +45     
  Branches       2665     2665              
============================================
+ Hits          31534    31536       +2     
- Misses        89372    89415      +43     
  Partials       1573     1573              

Flag	Coverage Δ
core	79.01% <ø> (ø)
editoast	73.84% <ø> (ø)
front	8.43% <3.57%> (-0.01%)	⬇️
gateway	2.75% <ø> (ø)

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[SharglutDev]

Thank you for this PR ! Lgtm and tested and it works great.
Left some suggestions.

[SharglutDev]

Lgtm o//