This policy controls whether the WebUI part of the sign-in screen will be always loaded at start or only before showing it. This policy applies to the sign-in screen.
If this policy is enabled, the WebUI part of the sign-in UI will be loaded only before showing it. This speeds up the login process.
If this policy is disabled, the WebUI part of the sign-in screen will always be loaded on boot (legacy behavior).
If unset, behavior will be controlled by kEnableLazyLoginWebUILoading feature.
This policy should be removed after kEnableLazyLoginWebUILoading is fully rolled out.