Editable legal holds and cases

Admins can now edit existing Legal Holds—update names, descriptions, and custodians directly from the Legal Hold listing or via API. Whether you're adding new users, removing irrelevant boards, or adjusting to changing case scopes, this update ensures your preservation efforts stay precise and compliant. No more workarounds or starting from scratch—now you can respond to evolving legal requirements in real time, with a clear view of how changes impact board coverage.