x train schedule could not be found when opening a scenario

[louisgreiner]

What happened?

message: "1 train schedule(s) could not be found"
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status: 404
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type: "editoast:train_schedule:BatchTrainScheduleNotFound"

It needs to refresh the page to load the train schedule simulation

What did you expect to happen?

No response

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

1. create new scenario
2. create a train schedule
3. notice bug

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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