front: reset the pathStep properties instead of deleting the pathStep

[theocrsb]

Close #8164 but we don't have an 'eraser' logo. I have opened a new ticket.
And this PR should also fix this comment

[codecov-commenter]

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

Codecov Report

Attention: Patch coverage is 0% with 43 lines in your changes missing coverage. Please review.

Project coverage is 36.93%. Comparing base (5a1be08) to head (9368ee3).
Report is 1 commits behind head on dev.

Files	Patch %	Lines
front/src/modules/timesStops/TimesStopsInput.tsx	0.00%	43 Missing ⚠️

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

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #8438      +/-   ##
============================================
- Coverage     36.94%   36.93%   -0.02%     
  Complexity     2168     2168              
============================================
  Files          1271     1271              
  Lines        117906   117921      +15     
  Branches       3164     3164              
============================================
- Hits          43565    43553      -12     
- Misses        72475    72502      +27     
  Partials       1866     1866              

Flag	Coverage Δ
core	74.96% <ø> (ø)
editoast	66.37% <ø> (-0.04%)	⬇️
front	15.84% <0.00%> (-0.01%)	⬇️
gateway	2.20% <ø> (ø)
osrdyne	2.71% <ø> (ø)
railjson_generator	87.49% <ø> (ø)
tests	72.91% <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.

[Akctarus]

Tested, works well. For the bug to which this PR is linked, this closes it well since it is no longer reproducible.

[kmer2016]

The code looks fine to me. However, I'm not sure if it's intentional, but when the pathStep is erased, the information is deleted, yet the icon remains. Was this the intended behavior?

[theocrsb]

The code looks fine to me. However, I'm not sure if it's intentional, but when the pathStep is erased, the information is deleted, yet the icon remains. Was this the intended behavior?

After talking with @Tguisnet. We think it's better to remove the cross when everything is clear.

[kmer2016]

LGTM and tested