helm chart: filter out volumeMounts parameters from volumes

[mnacharov]

Describe the bug
To specify additional volumes and volumeMounts for the manager container a single array parameter .Values.controller.manager.volumes is used.

The {{- define "vso.controller.volumeMounts" -}} helper passes only name, mountPath and readOnly parameters, so the chart generates a clear volumeMounts array.

On the other hand, the {{- define "vso.controller.volumes" -}} helper doesn't filter out mountPath and readOnly parameters, which have no sense in the volumes array.

To Reproduce
Steps to reproduce the behavior:

1. Create values.yaml:

   controller:
     manager:
       volumes:
       - name: test
         emptyDir: {}
         mountPath: /mnt
         readOnly: false
   

2. helm install:

   $ helm install --version 1.3.0 --namespace vault-secrets-operator vault-secrets-operator --create-namespace -f values.yaml hashicorp/vault-secrets-operator
   Error: INSTALLATION FAILED: failed to create typed patch object (vault-secrets-operator/vault-secrets-operator-controller-manager; apps/v1, Kind=Deployment): .spec.template.spec.volumes[name="test"].mountPath: field not declared in schema
   

   ❗ Error occurred ⤴️
3. Deployment haven't been installed:

   $ kubectl -n vault-secrets-operator get deploy
   No resources found in vault-secrets-operator namespace.
   

Expected behavior

VSO should be created with custom volume. The mountPath and readOnly fields should be filtered out from volumes array.

Environment

• Kubernetes version: v1.35.1
  • Distribution or cloud vendor (OpenShift, EKS, GKE, AKS, etc.): minikube version: v1.38.1
  • Other configuration options or runtime services (istio, etc.): -
• vault-secrets-operator version: 1.3.0

Additional context
Add any other context about the problem here.