chore: 显示操作视频

src/modules/student/contest/views/Lab.vue

@@ -146,7 +146,7 @@ const reportDialogVisible = $ref(false)
             <!-- <Book :competition_id="id" :key="resizeKey"></Book> -->
             <Book :competition_id="id" :experiment_id="getExperimentId"></Book>
           </el-tab-pane>
-          <el-tab-pane label="操作视频" lazy v-if="false">
+          <el-tab-pane label="操作视频" lazy>
             <Video :competition_id="id"></Video>
           </el-tab-pane>
           <el-tab-pane label="讨论交流" lazy>