[FE][Fix] #376 : 흰색 배경 안나오는 거 수정

frontend/src/routes/AlertUndefinedURL.tsx

@@ -2,7 +2,7 @@ import { Navigate, useLocation } from 'react-router-dom';
 import { useState } from 'react';
 import { AlertUI } from '@/component/common/alert/Alert.tsx';
 
-export const AlertUndefinedURL = () => {
+export const AlertUndefinedURL = ({ children }: { children?: JSX.Element }) => {
   const location = useLocation();
   const [shouldRedirect, setShouldRedirect] = useState(false);
   const [showAlert, setShowAlert] = useState(true);
@@ -24,10 +24,7 @@ export const AlertUndefinedURL = () => {
           }}
         />
       )}
-      <article className="flex h-screen w-full flex-col items-center justify-center gap-3 text-2xl">
-        <div>잘못된 경로입니다.</div>
-        <div>메인 페이지로 이동합니다.</div>
-      </article>
+      {children}
     </>
   );
 };