Without this, the preview build invented a fresh timestamp for
`Values.global.deployment_id` and the resulting diff showed every
Deployment changing its `app.kubernetes.io/version` annotation - even when
nothing semantically changed. CommandPreview now reads the deployment id
out of `release.Chart.Metadata.Version` and passes it through a new
`BuildOptions.OverrideDeploymentID` parameter so the previewed manifests
carry the same version label as the live release. The deploy path still
generates a fresh timestamp.