Sign in fails when the next parameter is empty (#261)

* Refactor sign-in flow to ensure fallback return paths

Updated logic to use fallback values for `returnPath` to prevent potential undefined behavior. Improved consistency in handling default paths during sign-in and redirection processes.

packages/features/auth/src/components/sign-in-methods-container.tsx

@@ -45,8 +45,10 @@ export function SignInMethodsContainer(props: {
 
       router.replace(joinTeamPath);
     } else {
+      const returnPath = props.paths.returnPath || '/home';
+
       // otherwise, we should redirect to the return path
-      router.replace(props.paths.returnPath);
+      router.replace(returnPath);
     }
   };