Wrong vc value in the jwt response for raw sign api

[mikeplotean]

Describe the bug
When calling /raw/jwt/sign api, the response jwt contains in its vc field the original request instead of the credential data.

To Reproduce
Steps to reproduce the behavior:

1. Go to issuer-api
2. Execute /raw/jwt/sign using the example request body

Expected behavior

• a jwt is returned
• when decoded (on https://jwt.io), the vc field contains the credentialData value from the original request

Actual behavior

• a jwt is returned
• when decoded, the vc field contains the entire original request

Environment

• dev: https://issuer.portal.walt-test.cloud
• prod: https://issuer.portal.walt.id