Fix add_decom_workflow_type migration to include Remediate in constraint

The older migration drops and re-adds the workflow_type CHECK constraint
but only included FP, Archer, CARD, GRANITE, DECOM. Once Remediate data
exists in the table, re-adding the old constraint fails. Added Remediate
to the constraint set so migrations can run idempotently in order.

backend/migrations/add_decom_workflow_type.js

@@ -17,7 +17,7 @@ async function migrate() {
         await pool.query(`
             ALTER TABLE ivanti_todo_queue
             ADD CONSTRAINT ivanti_todo_queue_workflow_type_check
-            CHECK (workflow_type IN ('FP', 'Archer', 'CARD', 'GRANITE', 'DECOM'))
+            CHECK (workflow_type IN ('FP', 'Archer', 'CARD', 'GRANITE', 'DECOM', 'Remediate'))
         `);
         console.log('✓ Added updated workflow_type constraint (includes DECOM)');