Backend: Add mutation to mark a catalog resource as draft

Summary

This issue is a result of a discussion in !124668 (comment 1471666332) to ensure we have the ability to set catalog_resource.state as draft after the toggle was originally set.

Proposal

This is the backend companion to this issue: Design: Provide a warning model when users togg... (#416938 - closed)

This issue should implement the ability to set a catalog resource back to draft and not destroy any existing version. This is done via a GraphQL resolver.

Implementation Table

Group	Issue Link
backend	👈 You are here
frontend	#416938 (closed)

Links/References