fix(course):修复课程视频开放状态判断逻辑

- 调整 isOpen 状态判断分支逻辑
- 确保正确的服务方法被调用- 修复因逻辑颠倒导致的业务处理错误

fs-user-app/src/main/java/com/fs/app/controller/course/CourseQwController.java

@@ -286,9 +286,9 @@ public class CourseQwController extends AppBaseController {
         Long userId = Long.parseLong(getUserId());
         param.setUserId(userId);
         if(param.getIsOpen() == null || param.getIsOpen() == 0){
-            r = courseVideoService.isAddKf(param);
-        }else{
             r = courseVideoService.isAddKfIsOpen(param);
+        }else{
+            r = courseVideoService.isAddKf(param);
         }
         return r;
     }