core: stdcm: we're (still) too optimistic on engineering allowances

[eckter]

What happened?

[09:28:42,502] [ERROR]             [Allowance] Couldn't reach target time for allowance section.
[09:28:42,502] [ERROR]             [Allowance] Closest time = 54.482671, target time = 77.69749198843365 +- 0.003634815373274719

[...]


java.lang.RuntimeException: Failed to compute a simulation that wouldn't cause conflicts: mismatch between exploration and postprocessing (please open a bug report)
	at fr.sncf.osrd.stdcm.graph.PostProcessingSimulationKt.handlePostProcessingConflict-WS7ElmQ(PostProcessingSimulation.kt:472)
	at fr.sncf.osrd.stdcm.graph.PostProcessingSimulationKt.buildFinalEnvelope(PostProcessingSimulation.kt:104)
	at fr.sncf.osrd.stdcm.graph.PostProcessingSimulationKt.handlePostProcessingConflict-WS7ElmQ(PostProcessingSimulation.kt:457)
	at fr.sncf.osrd.stdcm.graph.PostProcessingSimulationKt.buildFinalEnvelope(PostProcessingSimulation.kt:104)
	at fr.sncf.osrd.stdcm.graph.PostProcessingSimulationKt.buildFinalEnvelope$default(PostProcessingSimulation.kt:51)
	at fr.sncf.osrd.stdcm.graph.STDCMPostProcessing.makeResult(STDCMPostProcessing.kt:83)
	at fr.sncf.osrd.stdcm.graph.STDCMPathfinding.findPath(STDCMPathfinding.kt:134)
	at fr.sncf.osrd.stdcm.graph.STDCMPathfindingKt.findPath(STDCMPathfinding.kt:77)
	at fr.sncf.osrd.api.api_v2.stdcm.STDCMEndpointV2.run(STDCMEndpointV2.kt:110)
	at fr.sncf.osrd.cli.ReproduceRequest.run(ReproduceRequest.java:48)
	at fr.sncf.osrd.App.main(App.java:44)

What did you expect to happen?

No response

How can we reproduce it (as minimally and precisely as possible)?

Fuzzer, I have payloads

On which environments the bug occurs?

Local

On which browser the bug occurs?

Firefox

OSRD version (top right corner Account button > Informations)

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