RegistryConsistencyWorker should be able to delete Package Files

What does this MR do?

Implements PackageFileRegistry.delete_for_model_ids and extends FileRegistryRemovalService in a way that it works with Self-Serivce Framework.

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry => This is part of a feature that is being released this milestone which already has a changelog.
• Documentation (if required) will be done in follow up MR
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.

#222635 (closed)