Studio-related resources are not constrained by any schema

[crisely09]

Description
When creating a new studio in a project with the configuration set up so all new events check if resources are constrained by a schema, the creation fails, because all resources from studios are not constrained, they don't have schemas.

What part of Nexus is affected

• Fusion
• Delta
• CLI
• Documentation

To Reproduce
For Fusion:

1. Go to 'dke/kgforge' or any project that has a restriction to only allow resources constrained by a schema (this could be any of your projects)
2. Click on Studios
3. Click on Create Studios
4. Give a name and save it.

Expected behavior
A new studio should be created.

Additional context
This is needs to be fixed before we change the configuration of the projects to impose schema constraints.

[imsdu]

Fixed with #5075