Go to the layout tab and uncheck “Visible on page load” and check “Collapse when hidden” then just have the one conditional showing it when the user is Admin. Since it wasn’t visible on page load it won’t actually be there for them to inspect and make visible again.
Then an extra layer would be put the same condition on the workflow itself (Current user’s role is Admin) so even if it is visible (somehow) it can’t actually do anything if clicked.