Revert "improvement(ci): reject pooled (pgbouncer) database urls for migrations"

This reverts commit 3b80d83.

Author: TheodoreSpeaks

.github/workflows/migrations.yml

@@ -62,12 +62,6 @@ jobs:
             echo "ERROR: no database URL secret resolved for environment '${ENVIRONMENT}'" >&2
             exit 1
           fi
-          case "$DATABASE_URL" in
-            *:6432*)
-              echo "ERROR: '${ENVIRONMENT}' database URL targets PgBouncer (port 6432); migrations need a direct connection (port 5432) — session advisory locks and SET don't survive transaction pooling" >&2
-              exit 1
-              ;;
-          esac
 
           if [ "${ENVIRONMENT}" = "dev" ]; then
             echo "Dev environment — pushing schema directly (db:push)"