Add `migrated_to_state_transition` column to `vulnerability_feedback` table

What does this MR do and why?

This MR adds migrated_to_state_transition column to vulnerability_feedback table so we can mark records that have been migrated to the vulnerabilities_state_transition table and we don't create duplicate entries

Related to !97699 (comment 1120097492)

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.