fix(chaining): launching a scenario enqueues injects from previously launched simulations of the same scenario

[EvaE-Filigran]

Description

When launching a scenario (which creates a new simulation), the new simulation incorrectly picks up injects from previously launched simulations of the same scenario.

This causes cross-simulation data leakage: injects that should remain scoped to older simulations are introduced into the newly created one.

Environment

1. OS: macOS 14 (à adapter)
2. Version: { OpenAEV version à compléter }
3. Other environment details:
   • Chaining enabled
   • Same scenario launched multiple times

Reproducible steps

Steps to create the smallest reproducible scenario:

1. Create a scenario S with injects/steps.
2. Launch S once to create simulation A.
3. Launch S again to create simulation B.
4. Inspect injects linked/enqueued for simulation B.
5. Observe that simulation B contains injects originating from simulation A.

Expected output

A newly launched simulation must only include injects created for that simulation run.
Injects from previously launched simulations of the same scenario must never be reused.

Actual output

The newly launched simulation includes/enqueues injects from older simulations linked to the same scenario.

Enregistrement.de.l.ecran.2026-09-15.a.15.06.39.mov

[mergenhan]

I can not reproduce it in main-ff or demo environment. But EvaE-Filigran and Stephanya Casanova (@savacano28) have already reproduce it. Any question, please ask them.

[EvaE-Filigran]

To reproduce it, you need to import a scenario.