ArgoCD ignores Helm reclaim policy and does not persist scratch area

[DiamondJoseph]

As observed on p46, which only has a scratch-1.4.1 PVC and not the prior scratch-1.4.0 PVC after upgrading. We want to preserve the PVC for a limited time to persist code changes across restarts but also to allow rolling back and grant time to push changes up to remote.

May be due to
https://www.reddit.com/r/ArgoCD/comments/12hl6ob/helmshresourcepolicy_keep_is_getting_ignored_in/

Acceptance Criteria

• PVC deletion behaviour is as expected and documented in the Helm chart

[DiamondJoseph]

We should instead use these annotations:

	  annotations:
	    # don't delete autosave so it can be recovered if the whole beamline is deleted
	    helm.sh/resource-policy: keep
	    argocd.argoproj.io/sync-options: Delete=false