fix: Forward StaticObjectProperties to avoid loss

In the entity producer not for all entity types the properties from the scenario were copied to the new properties. This resulted in loss of e.g. the model_3d attribute value.

There will be a follow-up refactoring MR because now the StaticObjectProperties are:

1. taken over from the scenario engine
2. partially overwritten for specific static objects (traffic signs...)
3. overwritten again partially with the original values from the scenario