auth.existingSecret does not work for PostgreSQL chart about charts HOT 2 CLOSED

$ cat <<EOF > secret.yaml
apiVersion: v1
kind: Secret
metadata:
  name: postgresql-secret
  namespace: postgres-test
type: Opaque
data:
  postgres-password: $(echo -n 'julietta' | base64)
EOF

$ kubectl create ns postgres-test
$ kubectl apply -f secret.yaml
$ helm install postgres-test -n postgres-test oci://registry-1.docker.io/bitnamicharts/postgresql -f params.yaml\
$ kubectl get pods -n postgres-test
NAME                         READY   STATUS    RESTARTS   AGE
postgres-test-postgresql-0   1/1     Running   0          37s

$ kubectl exec -it pod/postgres-test-postgresql-0 -n postgres-test -- bash -c 'PGPASSWORD=julietta psql -U postgres'
psql (16.1)
Type "help" for help.

postgres=#