修复声部显示问题

src/views/prepare-lessons/components/lesson-main/courseware/index.tsx

@@ -298,7 +298,7 @@ export default defineComponent({
         );
         const subjectId =
           forms.subjectId || localStorageSubjectId
-            ? Number(localStorageSubjectId)
+            ? Number(forms.subjectId || localStorageSubjectId)
             : null;
         // 判断浏览器上面是否有
         const index = subjectList.findIndex(