Is your feature request related to a problem?

To further ensure container isolation, I'd like to deploy the argo projects with hostUsers: true.

Related helm chart

argo-cd, argocd-apps, argocd-image-updater, argo-events, argo-rollouts, argo-workflows

Describe the solution you'd like

Add a flag in values.yaml for setting hostUsers

Describe alternatives you've considered

Wrapping with kustomize

Additional context

https://kubernetes.io/docs/concepts/workloads/pods/user-namespaces/
https://kubernetes.io/docs/tasks/configure-pod-container/user-namespaces/