front: avoid unecessary path finding call in stdcm

[sim51]

fix #10144

Adding a state for pathStepsLocations and only changes its value when there is a deep diff

[emersion]

Why are the pathSteps updated when touching the calendar in the first place?

Shouldn't we avoid this update instead? Otherwise we'd need to carry this workaround each time pathStep is in a useEffect()/useMemo() dependency.

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@@            Coverage Diff             @@
##              dev   #10288      +/-   ##
==========================================
+ Coverage   81.53%   81.56%   +0.02%     
==========================================
  Files        1059     1062       +3     
  Lines      104508   104968     +460     
  Branches      722      722              
==========================================
+ Hits        85213    85617     +404     
- Misses      19254    19310      +56     
  Partials       41       41              

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front	89.31% <100.00%> (+0.05%)	⬆️
gateway	2.18% <ø> (ø)
osrdyne	3.28% <ø> (ø)
railjson_generator	87.50% <ø> (ø)
tests	87.05% <ø> (ø)

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[sim51]

Temporal inputs are stored in the corresponding step. Steps defines the whole path with its constraints, which makes sense.

Ex:
Step 1 : 2025-01-05 at 10h22 Nantes
Step 2: Ancenis with a 5min Stop
Step 3: Angers

In our case we need a derivative data because we just want to find a path (not a schedule).

[emersion]

Eh, sorry, I thought we had separate arrays for path and schedule, but everything is in a single StdcmPathStep type.

I don't see a better way to fix this bug!

[SharglutDev]

Lgtm and tested