simulation loader pops even if time range is wrong

[SharglutDev]

What happened?

If I start a simulation with a selected time not in the stdcmEnv range, the warning toast pops but the simulation pops as if the simulation started but its not.

What did you expect to happen?

• Simulation loader shouldn't pop
• We could display a warning message in the form

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

1. Go to stdcm
2. Try to launch a simulation with a time not in the env time range

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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