UUID format fix for jsonschema visitor

[ragi-dayananda]

Changes

JSON schema for CTO model generates the referential type to be "string" with appropriate referent type. However, it should also support the "identified by" type format for "uuid"

Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• Vital features and changes captured in unit and/or integration tests
• Commits messages follow AP format
• Extend the documentation, if necessary
• Merging to main from fork:branchname

[dselman]

Do we also handle adding the UUID format to non relationship UUID scalars?

[ragi-dayananda]

Do we also handle adding the UUID format to non relationship UUID scalars?

@dselman no, we haven't handled that in this PR. Good catch, let me add it.

[dselman]

Nice work!