PR #1839 introduced template rendering for postRendererArgs, but PR #2510
reverted it while fixing a separate regression. This left helmDefaults-level
postRendererArgs containing template expressions (e.g. {{ .Release.Name }})
passed to helm as literal strings instead of being resolved per-release.
Add renderPostRendererArgs() that templates helmDefaults.postRendererArgs
at flag-generation time using the release's template data, reusing the
existing createReleaseTemplateData() helper. Release-level args are already
templated by ExecuteTemplateExpressions and CLI args are static, so only
the helmDefaults path needs rendering.
Fixes#2580
Signed-off-by: opencode <opencode@users.noreply.github.com>
Signed-off-by: yxxhero <aiopsclub@163.com>