fix: auto select ethiopian when chosing the coop option

apps/edr-freight-web/portal/src/components/onboarding/OnboardingWizardDialog.tsx

@@ -169,7 +169,8 @@ export default function OnboardingWizardDialog({
     setCooperative(checked);
     if (checked) {
       setRoles((prev) => prev.filter((r) => r !== "freight_forwarder"));
-      setNationality((prev) => (prev === "foreign" ? "ethiopian" : prev));
+      // Ethiopian is then the only answer left, so it is made rather than asked.
+      setNationality("ethiopian");
     }
   }, []);
   const [documentFiles, setDocumentFiles] = useState<