Fix hubspot callback (#3195)

Co-authored-by: Leo Giovanetti <hello@leog.me>

apps/web/pages/auth/login.tsx

@@ -71,7 +71,9 @@ export default function Login({
     callbackUrl = `${WEBAPP_URL}/${callbackUrl}`;
   }
 
-  callbackUrl = getSafeRedirectUrl(callbackUrl);
+  const safeCallbackUrl = getSafeRedirectUrl(callbackUrl);
+
+  callbackUrl = safeCallbackUrl || "";
 
   const LoginFooter = (
     <span>

packages/lib/getSafeRedirectUrl.ts

@@ -1,7 +1,10 @@
 import { CONSOLE_URL, WEBAPP_URL, WEBSITE_URL } from "@calcom/lib/constants";
 
 // It ensures that redirection URL safe where it is accepted through a query params or other means where user can change it.
-export const getSafeRedirectUrl = (url: string = "") => {
+export const getSafeRedirectUrl = (url = "") => {
+  if (!url) {
+    return null;
+  }
   if (url.search(/^https?:\/\//) === -1) {
     throw new Error("Pass an absolute URL");
   }