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K3s/Rke2 include a Helm Controller that manages installing, upgrading/reconfiguring, and uninstalling Helm charts using a HelmChart Custom Resource Definition (CRD). Ref https://docs.k3s.io/helm

We want to verify and document the best practices for this new installation method. We can also add it to https://longhorn.io/docs/1.7.1/deploy/install/

One if the features of this installation method is that it will automatically uninstall the chart and reinstall the chart when an upgrade repeatedly failed. We all know that Longhorn chart is critical and should not be automatically installed like this otherwise there will be data lost. So for this installation method, we may want to set spec.failurePolicy to abort so that they can manually resolve the issue. Ref: https://docs.k3s.io/helm#helmchart-field-definitions