HOTFIX: fix graphiql's errors in loading component

frontend/src/pages/(navbar)/graphiql.tsx

-import { useSetPageTitle } from '@/utils'
-import { lazy } from 'react'
+import { Suspense, lazy } from 'react'
 
 const GraphiQLPage = lazy(() => import('@/logic/GraphiQL'))
 
-export const GraphiQL = () => {
-  useSetPageTitle('GraphiQL')
-
-  return <GraphiQLPage />
-}
+export const GraphiQL = () => <Suspense>
+    <GraphiQLPage />
+</Suspense>
 
 export default GraphiQL