Run PR containers without checking schema? or checking against dev schema?

It's not possible to start a model run using a PR container currently because of the schema check. Amend code so that if version starts with pr to default to dev version of schema...? or skip the schema validation completely?

<img width="541" height="106" alt="Image" src="https://github.com/user-attachments/assets/a6ce9291-13fe-4e1e-bcff-454c7f868139" />