禁用编程课视频下载功能

src/components/videopage/VideoPlayer.vue

@@ -15,6 +15,7 @@
               @pause="handleVideoPause"
               @play="handleVideoPlay"
               @click="handleVideoClick"
+              controlslist="nodownload"
           ></video>
           <!-- 历史播放位置提示 -->
           <div