Squashed commit of the following:

commit 78e0dee976bbd96f4ecd2b26685356f60ed8e60f
Author: skyblued <806020149@qq.com>
Date:   Mon Aug 15 18:28:04 2022 +0800

    视频课修改

src/teacher/video-class/class-info.tsx

@@ -119,6 +119,9 @@ export default defineComponent({
               readonly
               isLink
               onClick={() => {
+                if (createState.groupId) {
+                  return
+                }
                 this.subjectStatus = true
               }}
               rules={[{ required: true, message: '请选择课程声部' }]}
@@ -156,6 +159,7 @@ export default defineComponent({
               v-slots={{
                 button: () => <span>元</span>
               }}
+              disabled={createState.groupId ? true : false}
             />
           </ColField>
         </ColFieldGroup>