Delete and revoke confirmations now show red, not neutral, buttons

Several confirmation dialogs across the dashboard (delete a site, revoke an API key, revoke your own session, delete a connector, delete an agent, delete a role, revoke a pending invitation, remove/leave an organization member, and rotate a site's public key) were showing their confirm button in the same neutral style as an ordinary action, even though the action itself is permanent and destructive.

These now show in the same red, destructive style already used elsewhere in the dashboard (for example bulk session revocation), so a delete or revoke action reads at a glance as something that can't be undone. Nothing about what these actions do has changed; this only fixes how the confirm button looks.