The form element drew its action bar only when `no_visible_fields` was unset. That
attribute means the form has no visible *fields* -- logout and TOTP deactivate are
a bare csrf token plus a button -- and says nothing about its actions. So the bar,
and the only button on the page, was hidden on exactly the pages that exist to
offer that button. Sign Out could not be clicked at all.
The bar is now drawn when the actions slot has content, which is the condition
that was meant all along. Tests cover both pages.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>