front: add unit tests for stdcm simulation report sheet

[Akctarus]

closes #7816

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 55.76923% with 23 lines in your changes missing coverage. Please review.

Project coverage is 28.11%. Comparing base (580140d) to head (98bf082).

Files	Patch %	Lines
...cations/stdcm/utils/formatSimulationReportSheet.ts	80.55%	4 Missing and 3 partials :warning:
...cations/stdcm/components/SimulationReportSheet.tsx	0.00%	5 Missing :warning:
...nt/src/applications/stdcm/views/StdcmResultsV2.tsx	0.00%	4 Missing :warning:
...s/stdcmV2/components/StdcmResults/StdcmResults.tsx	0.00%	4 Missing :warning:
...tions/stdcm/components/SimulationReportSheetV2.tsx	0.00%	1 Missing :warning:
...ront/src/applications/stdcm/views/StdcmResults.tsx	0.00%	1 Missing :warning:
...cmV2/components/StdcmResults/StdcmResultsTable.tsx	0.00%	1 Missing :warning:

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Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #7979      +/-   ##
============================================
+ Coverage     28.06%   28.11%   +0.05%     
  Complexity     2081     2081              
============================================
  Files          1289     1289              
  Lines        157717   157740      +23     
  Branches       3116     3131      +15     
============================================
+ Hits          44260    44347      +87     
+ Misses       111582   111503      -79     
- Partials       1875     1890      +15     

Flag	Coverage Δ
core	75.11% <ø> (ø)
editoast	70.75% <ø> (-0.05%)	:arrow_down:
front	9.99% <55.76%> (+0.08%)	:arrow_up:
gateway	2.34% <ø> (ø)
railjson_generator	87.49% <ø> (ø)
tests	73.18% <ø> (ø)

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