Ask what the installed cape's defaultSettings WOULD do under a jurisdiction

Cape detection runs from fppinit at boot, before anyone has been asked where they are, so a cape's telemetry defaults are held rather than applied. By the time the setup wizard has that answer, detection has already run. This lets the wizard re-ask the question without re-running detection for real -- which would write to the settings file mid-wizard and break the property the page depends on, that nothing is persisted until Finalize. Nothing is written. The evaluation calls the same predicate a real run calls, so the answer cannot drift from what would actually happen. A key the user has already set is absent from both lists; a key already holding exactly the proposed value is absent too, since there is nothing to offer and nothing to explain.