What would you like to be added?

When listing releases, currently a default max limit is set if no max limit is mentioned. This is a good practice, yes, since showing too much data can be overwhelming and also time consuming and also just too much data and less clarity. But, At first sight, who doesn't know about the max limit, it feels like there are only the shown amount of releases, though there maybe more. So, it's better to show if the results were truncated to fit into the max limit so that the user knows that there are more and that there's no bug in helm causing it to show only some of the releases while asking for all using something like helm ls --all-namespaces

Why is this needed?

This is needed just for clarity so that the user is not surprised and think that their release is missing when checking using helm ls but they can see helm release data present as Kubernetes secret - causing the user to think if there's a bug in helm