fix: fetch dataset scope options from WorldQuant platform

backend/tests/browser_server.py

@@ -109,6 +109,8 @@ def create_test_app():
                 },
                 headers={"Set-Cookie": "mock=only; Path=/"},
             )
+        if request.method == "OPTIONS":
+            return catalog_response(request) or httpx.Response(404)
         if path.startswith("/simulations") or (
             path.startswith("/alphas/") and path.rsplit("/", 1)[-1] in simulations.alphas
         ):