fix CONSTRAINT on schema

Author: charleslien

common/src/db/migrations/0028_magical_korath.sql

@@ -0,0 +1,3 @@
+CREATE UNIQUE INDEX IF NOT EXISTS "unique_step_number_per_run" ON "agent_step" USING btree ("agent_run_id","step_number");--> statement-breakpoint
+ALTER TABLE "publisher" ADD CONSTRAINT "publisher_single_owner" CHECK (("publisher"."user_id" IS NOT NULL AND "publisher"."org_id" IS NULL) OR
+    ("publisher"."user_id" IS NULL AND "publisher"."org_id" IS NOT NULL));