Description of problem:
OCP upgrade from 4.6.26 to 4.7.8 stuck while trying to evict PODs from nodes to be drained

kube-apiserver logs showed `configuration:virt-api-validator,webhook:virt-launcher-eviction-interceptor.kubevirt.io` failing with `context canceled`

Version-Release number of selected component (if applicable):

• OCP version 4.6.26
• OCP Virtualization 2.5.5
• Fresh cluster with no customer workloads, no OCP-Virt VMs

How reproducible:
Currently being seen in customer environment

Steps to Reproduce:
1. Have an OCP 4.6.x cluster with CNV 2.5.x installed with no VMs at that point
2. Trigger the upgrade to 4.7.x

Actual results:
Cluster upgrade is not progressing since nodes cannot be drained.

Expected results:
Since webhook:virt-launcher-eviction-interceptor has a failurePolicy set to Ignore, drain should not fail.

Additional info:

must-gather couldn't be collected due to apiserver unresponsiveness