What's the task? Please describe

After discussing with @PhanLe1010 again, we need to double clarify if the removed storage v1beta1 API from 1.27 really impacts us.

• There is no v1beta1 storage.k8s.io used in our current code base (1.4 and master), because we already upgrade to v1.
• https://kubernetes.io/docs/reference/using-api/deprecation-guide/#csistoragecapacity-v127 is not related to CSI snapshot CRD which is individual from K8s builtin.

Describe the items of the task (DoD, definition of done) you'd like

• clarify if the upcoming API deprecation/removal will impact Longhorn 1.4

Additional context

cc @longhorn/dev