feat(task): 添加视频ID到下载通知任务

- 在DownloadNotificationTasker中添加videoId变量到模板参数
- 将item.getVideoId()方法调用结果存入variables映射中
- 确保视频ID信息能够在通知模板中正确渲染使用

src/main/java/com/ycwl/basic/task/DownloadNotificationTasker.java

@@ -81,6 +81,7 @@ public class DownloadNotificationTasker {
                     variables.put("scenicName", scenic.getName());
                     variables.put("scenicId", scenic.getId());
                     variables.put("faceId", item.getFaceId());
+                    variables.put("videoId", item.getVideoId());
                     ScenicConfigManager configManager = scenicRepository.getScenicConfigManager(item.getScenicId());
                     if (configManager.getBoolean("grouping_enable", false)) {
                         variables.put("videoResultPage", "travelVideoCenter");