fix lint errors

src/routes/index.tsx

@@ -1,6 +1,5 @@
 import { Button, Flex, Heading, Text } from "@radix-ui/themes";
 import { useAuth } from "@workos-inc/authkit-react";
-import React from "react";
 import { Link } from "react-router-dom";
 import { SignInButton } from "../components/sign-in-button";
 

src/routes/login.tsx

@@ -6,4 +6,5 @@ export default function Login() {
   const [params] = useSearchParams();
   const context = params.get("context") ?? undefined;
   signIn({ context });
+  return null;
 }