RKE2 does not bundle RuntimeClass definitions

[brandond]

Follow up to:

• Make alternative container runtimes easier to use #5108

We created a chart with RuntimeClass definitions, but never actually added it to RKE2:

• New runtimeclass chart rke2-charts#384

We need to:

1. Ensure that the rke2-runtimeclasses chart is still in sync with all the supported runtime classes that are detected by k3s/rke2. In particular, I suspect that nvidia-smi may be missing.
2. Add that chart to RKE2.
3. Ensure that RKE2 assigns ownership of any supported RuntimeClass definitions to the rke2-runtimeclasses chart so that the helm install does not fail to install and go into crashloop backoff due to conflicting unmanaged resources. We should NOT take ownership of any runtimeclass definitions not managed by the chart, so that users can add their own.

For the final goal, this would probably look like a startup hook similar to https://github.com/rancher/rke2/blob/master/pkg/rke2/kp.go that iterates over the supported runtimeclass definitions and adds the correct helm labels/annotations.