configMap can't mounted as file on the NFS PVC

[dacrhu]

What happened:

volumes:
- name: my-pvc
persistentVolumeClaim:
claimName: my-pvc
- name: my-logo
configMap:
name: my-logo
defaultMode: 420
...
volumeMounts:
- name: my-pvc
mountPath: /app/private
- name: my-logo
mountPath: /app/private/logo
readOnly: true

Logo file is not mount to the folder.
if i change the mountPath to something other than nfs, it mounted.

What you expected to happen:
Be able to mount a configMap on NFS storage.

How to reproduce it:

1. make a NFS stoargeClass
2. make a PVC to NFS
3. try mount a configMap as file to it

Environment:

• CSI Driver version: v4.6.0
• Kubernetes version (use kubectl version): v1.28.7 (microk8s)
• OS (e.g. from /etc/os-release): Ubuntu 22.04.4
• Kernel (e.g. uname -a): 5.15.0-101-generic
• Install tools:
• Others: