message: fix(remix): Store transaction on express req
  This sets the transaction on the response so it can be finished.
diff: @@ -51,7 +51,10 @@ function wrapExpressRequestHandler(
  }
  const url = new URL(request.url);
  - startRequestHandlerTransaction(url, request.method, routes, hub, pkg);
  + const transaction = startRequestHandlerTransaction(url, request.method, routes, hub, pkg);
  + // save a link to the transaction on the response, so that even if there's an error (landing us outside of
  + // the domain), we can still finish it (albeit possibly missing some scope data)
  + (res as AugmentedExpressResponse).__sentryTransaction = transaction;
  return origRequestHandler.call(this, req, res, next);
  };
  }
  