Debezium platform with external database standalone server pod is not created [DBZ-9325]

Migrated from [DBZ-9325](https://issues.redhat.com/browse/DBZ-9325)

h2. Description

when using external database the standalone server pod/replicaset is not created after creating a pipeline.

recreate environment:
{code:java}
helm repo add debezium https://charts.debezium.io
helm upgrade --install debezium debezium/debezium-platform --version 3.2.0-final  -n playground --create-namespace -f values.helm.yml {code}
values.helm.yml:
{code:java}
domain:
  url: dbz.my.sv
database:
  enabled: false
  name: debezium
  host: postgresql.infra
  auth:
    existingSecret: debezium-postgresql  # <---- a secret {code}
secret.yml
{code:java}
apiVersion: v1
kind: Secret
metadata:
  name: debezium-postgresql
  namespace: playground
type: Opaque
data:
  username: cG9zdGdyZXM=
  password: cG9zdGdyZXM=  #<---- base64(postgres) {code}

Start by reproducing the deployment with the supplied helm repo, helm upgrade command, and values.helm.yml using database.enabled: false and the external PostgreSQL secret.yml. Confirm the pipeline creation behavior and trace why the standalone server pod or ReplicaSet is absent; done means it is created when the external database configuration is used.

Written by the indexing model from the issue text.