chore(database): make env default worker group migration idempotent

Author: myftija

internal-packages/database/prisma/migrations/20260609142054_add_environment_default_worker_group/migration.sql

@@ -1,5 +1,6 @@
 -- AlterTable
-ALTER TABLE "public"."RuntimeEnvironment" ADD COLUMN     "defaultWorkerGroupId" TEXT;
+ALTER TABLE "public"."RuntimeEnvironment" ADD COLUMN IF NOT EXISTS "defaultWorkerGroupId" TEXT;
 
 -- AddForeignKey
+ALTER TABLE "public"."RuntimeEnvironment" DROP CONSTRAINT IF EXISTS "RuntimeEnvironment_defaultWorkerGroupId_fkey";
 ALTER TABLE "public"."RuntimeEnvironment" ADD CONSTRAINT "RuntimeEnvironment_defaultWorkerGroupId_fkey" FOREIGN KEY ("defaultWorkerGroupId") REFERENCES "public"."WorkerInstanceGroup"("id") ON DELETE SET NULL ON UPDATE CASCADE;