fix: fixed incomplete router initialization in Quiz.vue which was allowing user to submit quiz multiple times

frontend/src/utils/quiz.js

@@ -4,6 +4,7 @@ import { createApp, h } from 'vue'
 import { usersStore } from '../stores/user'
 import translationPlugin from '../translation'
 import { CircleHelp } from 'lucide-vue-next'
+import router from '@/router'
 
 export class Quiz {
 	constructor({ data, api, readOnly }) {
@@ -46,6 +47,7 @@ export class Quiz {
 				quiz: quiz,
 			})
 			app.use(translationPlugin)
+			app.use(router)
 			const { userResource } = usersStore()
 			app.provide('$user', userResource)
 			app.mount(this.wrapper)