front: fix blank page when train schedule with no arrival date

[achrafmohye]

Closes #8112

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Codecov Report

Attention: Patch coverage is 55.55556% with 16 lines in your changes missing coverage. Please review.

Project coverage is 28.16%. Comparing base (dad4e39) to head (ff02097).
Report is 9 commits behind head on dev.

Files	Patch %	Lines
...le/components/TimetableV2/TimetableTrainCardV2.tsx	0.00%	13 Missing ⚠️
front/src/utils/date.ts	86.95%	0 Missing and 3 partials ⚠️

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Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #8140      +/-   ##
============================================
+ Coverage     28.12%   28.16%   +0.04%     
- Complexity     2112     2120       +8     
============================================
  Files          1296     1300       +4     
  Lines        158660   158820     +160     
  Branches       3164     3180      +16     
============================================
+ Hits          44621    44730     +109     
- Misses       112137   112183      +46     
- Partials       1902     1907       +5     

Flag	Coverage Δ
core	75.42% <ø> (+0.14%)	⬆️
editoast	70.38% <ø> (-0.02%)	⬇️
front	9.99% <55.55%> (+0.01%)	⬆️
gateway	2.03% <ø> (ø)
railjson_generator	87.49% <ø> (ø)
tests	73.18% <ø> (ø)

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[flomonster]

Thanks for your PR.

I have some structural remarks on this code (before the PR) and on the fix (the PR itself).
It's important to revamp the logic of this code to make it more robust.

[theocrsb]

LGTM and tested

[flomonster]

Some comments were not taken into account.

[eckter]

LGTM, bug is fixed

[flomonster]

Looks okay.

Note

The date management requires a code refactoring.

The transformation process is weird, for example the train.startTime process is as follows 🤯:

1. String ISO8601
2. Dayjs obj
3. String custom DD/MM/YYYY HH:mm:ss
4. Date obj
5. Dayjs obj
6. String custom DD/MM HH:mm:ss

[clarani]

LGTM, I created a enhancement to refacto this later : #8166