Finalize migration for backfilling non-ref contextual columns in vulnerabilities table

Summary

This issue tracks the finalization of the background migration that backfills non-ref contextual columns (solution, etc.) in the vulnerabilities table from vulnerability_occurrences records.

The backfill migration was introduced in #556208 and needs to be finalized in 18.9 before proceeding with cleanup work.

Tasks

  • Verify the background migration has completed successfully
  • Finalize the migration
  • Unblock dependent issues:
    • #561548 - Update vulnerability export procedure
    • #557308 - Remove no longer needed columns from vulnerability_occurrences table

Related Issues