Chart 0.6.1's fullnameOverride attempted to give ESO resources stable
names (just 'external-secrets' instead of '<release>-external-secrets')
but ArgoCD couldn't fully drain the prefixed resources from 0.6.0,
leaving sync stuck. Reverting: keep the subchart's default release-
prefixed naming, template the SA reference in ClusterSecretStore via
{{ .Release.Name }}-external-secrets so it resolves correctly per
cluster.