I have upgraded my custom rke cluster from version 1.23 to 1.24 by upgrading Rancher to version 2.74 (the latest docker image available at that time) and the upgraded k8s cluster through its menu options. Since k8s 1.24 removed docker runtime for containers, does it mean that Rancher took care of it and provided different container runtime? How can I check that? I am running the cluster on prem on a bunch of RHEL8 VMs