fix: isEncrypted breaks volume page

[a110605]

Summary

fix: isEncrypted() breaks the volume page.

PR Checklist

• Is this a multi-tenancy feature/bug?
  • Yes, the relevant RBAC changes are at:
• Do we need to backport changes to the old Rancher UI, such as RKE1?
  • Yes, the relevant PR is at:
• Are backend engineers aware of UI changes?
  • Yes, the backend owner is: @Vicente-Cheng

Related Issue #
harvester/harvester#7150

Reproduce step

kubectl apply -f fake-pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: fake-pv
spec:
  accessModes:
  - ReadWriteMany
  capacity:
    storage: 10Gi
  claimRef:
    apiVersion: v1
    kind: PersistentVolumeClaim
    name: fake-pvc
    namespace: default
  volumeMode: Block
  local:
    path: /tmp/foo
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
          - key: kubernetes.io/hostname
            operator: In
            values:
            - fake-node-name
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: fake-pvc
spec:
  accessModes:
  - ReadWriteMany
  resources:
    requests:
      storage: 10Gi
  volumeMode: Block
  volumeName: fake-pv

Occurred changes and/or fixed issues

Technical notes summary

Areas or cases that should be tested

Areas which could experience regressions

Screenshot/Video

Before fix

After fix

[torchiaf]

Did you check if there are places where missing this.relatedPV breaks the UI ? Otherwise LGTM

[Vicente-Cheng]

thanks!