Do not use overridden_uuid to create Vulnerabilities::Finding objects

Michał Zającrequested to merge
416087-create-vulnerability-findings-using-uuid into master

What does this MR do and why?

Explicitly set vulnerability_finding.uuid to security_finding.uuid so at no point will we use overidden_uuid there.

Related to #416534 (closed)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

Merge request reports