Enable saving passkeys to the password manager

This policy controls whether users can save passkeys in the built-in password manager. It does not limit access to, or change the contents of, passkeys already saved in the password manager. If the PasswordManagerEnabled policy is Disabled, saving to the built-in password manager is disabled in general, including passkeys. In this case, this policy has no effect. If this policy is enabled or not configured, users can save passkeys in the built-in password manager when signed in to Microsoft Edge. If this policy is disabled, users cannot save new passkeys to the built-in password manager. Previously saved passkeys continue to work.