Fix sort order bug in optimized transfers

[t2gran]

Summary

The optimized path service relay on sorting transfer between two trips on the toTrip boardStopPosition. The sort function used board time, witch in most cases works. But, it is allowed to use the same time for two stops next to each other. Many trip schedules only uses minutes precision, so two stops close to each other can be visited within the same minute.

Issue

Closes #5444

Unit tests

A regression unit-test is added.

Documentation

Not applicable.

Changelog

✅ This is a minor bugfix.

Bumping the serialization version id

No

[codecov]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (0c97ab9) 66.76% compared to head (afc010d) 66.85%.
Report is 70 commits behind head on dev-2.x.

Additional details and impacted files

@@              Coverage Diff              @@
##             dev-2.x    #5446      +/-   ##
=============================================
+ Coverage      66.76%   66.85%   +0.08%     
- Complexity     15445    15495      +50     
=============================================
  Files           1798     1800       +2     
  Lines          69777    69812      +35     
  Branches        7354     7353       -1     
=============================================
+ Hits           46590    46674      +84     
+ Misses         20725    20678      -47     
+ Partials        2462     2460       -2     

Files	Coverage Δ
...ntripplanner/ext/traveltime/IsochroneRenderer.java	0.00% <ø> (ø)
...ntripplanner/framework/geometry/GeometryUtils.java	75.18% <ø> (ø)
...nner/graph_builder/issue/report/GeoJsonWriter.java	0.00% <ø> (ø)
...nner/graph_builder/module/ned/ElevationModule.java	65.33% <100.00%> (ø)
...der/module/ned/GeotiffGridCoverageFactoryImpl.java	76.00% <ø> (ø)
...builder/module/ned/NEDGridCoverageFactoryImpl.java	0.00% <ø> (ø)
...r/graph_builder/module/ned/NoDataGridCoverage.java	27.58% <ø> (ø)
.../graph_builder/module/ned/UnifiedGridCoverage.java	0.00% <ø> (ø)
...timization/services/OptimizePathDomainService.java	90.76% <100.00%> (ø)
...planner/street/model/elevation/ElevationUtils.java	72.72% <100.00%> (ø)
... and 5 more

... and 35 files with indirect coverage changes

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