fix:修复我的课程展示教师端看不到自己的课程的问题：增加课程查询教师PID属性

src/main/java/com/njuzr/eaibackend/dto/course/CourseQueryDTO.java

@@ -12,6 +12,7 @@ import lombok.Data;
 public class CourseQueryDTO {
     private Long courseId;
     private Long teacherId;
+    private Long teacherPid;
     private Long studentId;
     private String courseName;
     private String semester;