修改题库试卷克隆时，不克隆试卷的课程属性，但是试卷的其他属性要一起克隆到另一个课程下的bug

cqb-paper/src/main/java/com/qmth/cqb/paper/service/ImportPaperService.java

@@ -1527,6 +1527,8 @@ public class ImportPaperService {
 		newQuestionPkgPath = quesPkgPathRepo.save(newQuestionPkgPath);
 		newQuestion.setQuesPkgPathId(newQuestionPkgPath.getId());
 		newQuestion.setId(null);
+		newQuestion.setQuesProperties(null);
+		newQuestion.setPropertyGroup(null);
 		newQuestion = quesRepo.save(newQuestion);
 		paperDetailUnit.setQuestion(newQuestion);
 	}