Perform a dry run for transforms

[martinRenou]

Fix https://github.com/jupytercad/JupyterCAD/issues/572

This prevents a critical crash when the translation transform cannot be applied, by not applying the transform.

https://github.com/user-attachments/assets/bd61e19c-a969-4ba1-af48-cbe85489866d

[martinRenou]

@trungleduc on the long term, I guess we will want to move the dry run logic (hence the worker) higher in the stack instead of in the main view model.

That way the object properties panel does not depend on a main view model being around?

[trungleduc]

@trungleduc on the long term, I guess we will want to move the dry run logic (hence the worker) higher in the stack instead of in the main view model.

That way the object properties panel does not depend on a main view model being around?

Indeed, the main view is doing too much thing

[github-actions[bot]]

Integration tests report: appsharing.space

[github-actions[bot]]

Preview PR at appsharing.space