[d4rshnn]

Issues

Closes #603

Changes

This PR unifies the three existing product duplication mechanisms into a single cloning workflow using ProductCloneForm.

The changes include:

• Removed the redundant "Save as new" functionality from the product edit form.
• Disabled "Save as new" in Django admin.
• Extended product cloning to copy vulnerability analyses associated with the source product's packages.
• Added copying of codebase resource deployment links (deployed_to).
• Ensured copied vulnerability analyses reference the corresponding cloned packages.
• Ensured deployment relationships reference cloned resources instead of the original resources.
• Preserved existing clone options, permissions and triage re-evaluation behaviour.

Testing

The following checks were successfully completed:

• Python compilation of all modified files.
• Ruff lint checks.
• Ruff formatting checks.
• Git diff whitespace validation.

Django runtime tests could not be executed because Docker was unavailable and the required Django dependencies were not installed in the local environment.

AI Assistance Disclosure

GitHub Copilot was used to assist with repository investigation, implementation and test updates. ChatGPT was used for issue analysis, implementation guidance and review assistance.

Checklist

• I have read the contributing guidelines.
• I have linked an existing issue above.
• I have added/updated unit tests covering the changes.
• I have reviewed and understood every line of this PR.