front: fix train selection in the anterior or posterior train list

[theocrsb]

closes #10133

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 81.43%. Comparing base (58d7306) to head (74452ec).
Report is 9 commits behind head on dev.

Files with missing lines	Patch %	Lines
front/src/reducers/osrdconf/stdcmConf/index.ts	0.00%	2 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #10154      +/-   ##
==========================================
- Coverage   81.44%   81.43%   -0.01%     
==========================================
  Files        1058     1058              
  Lines      104268   104268              
  Branches      722      722              
==========================================
- Hits        84916    84911       -5     
- Misses      19311    19316       +5     
  Partials       41       41              

Flag	Coverage Δ
editoast	73.60% <ø> (-0.02%)	⬇️
front	89.17% <50.00%> (ø)
gateway	2.18% <ø> (ø)
osrdyne	3.28% <ø> (ø)
railjson_generator	87.50% <ø> (ø)
tests	87.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[clarani]

Actually, the issue is not in this function, it's because we should not receive a string if we're expecting a date.

I let you search a bit, the problem comes from the action updateLinkedTrainExtremity, where we update the pathStep 😉

[clarani]

LGTM ✅

[Akctarus]

tested, LGTM :)