When the user logged out, the code would immediately set needsAuth=true
and return WITHOUT first fetching /api/security/status. This meant the
securityStatus signal was null, causing shouldShowLocalLogin() in Login.tsx
to return true (since !undefined === true).
Now we always fetch security status before showing the login form, even
in the just_logged_out path. This ensures hideLocalLogin, oidcEnabled,
and other OIDC settings are properly available to the Login component.
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