feat: 大题选择显示大题号

src/hooks/useOptions.ts

@@ -85,7 +85,7 @@ const useOptions = (
       mainQuestionListResult.value?.map<QuestionList>((v) => {
         return {
           ...v,
-          label: v.title,
+          label: `${v.mainNumber}-${v.title}`,
           value: v.mainNumber,
         }
       }) || []