When using jsonPatches or kustomize patches with helmfile, chartify runs
"helm template" internally to render the chart before applying patches.
The lookup() helm function requires cluster access (--dry-run=server).
Previously, --kubeconfig was passed to helm diff and helm upgrade commands,
but not to chartify's internal helm template call. This caused failures
when users specified --kubeconfig flag with a non-default kubeconfig location.
This fix ensures --kubeconfig is passed to chartify's TemplateArgs for
cluster-requiring commands (sync, apply, diff, etc.), alongside the existing
--kube-context and --dry-run=server flags.
Fixes#2444
Signed-off-by: yxxhero <aiopsclub@163.com>