fix: 修复预览无法跳转题目的问题

- 暂时将答案挂到 question 上面，后续等待接口实现再提交答案

src/views/Survey/views/Preview/components/questions/PreviewFileUpload.vue

@@ -3,6 +3,16 @@ import FileUpload from '@/views/Design/components/Questions/FileUpload.vue';
 const questionIndex = defineModel<number>('questionIndex', { default: NaN });
 const answerIndex = defineModel<number>('answerIndex', { default: NaN });
 const question = defineModel<question>('question', { default: () => {} });
+import { answer } from '@/views/Design/components/Questions/hooks/useFileUploadHooks';
+import { watch } from 'vue';
+
+const emit = defineEmits(['changeAnswer']);
+watch(answer, () => {
+  // 暂时先将答案挂到 question,后续需要优化
+  question.value.answer = answer.value;
+  // emit('changeAnswer', answer.value);
+  // console.log(`question`, question.value);
+});
 </script>
 <template>
   <!-- 文件上传题 -->