Guanglei Cheng

[#13304] Refactoring for Unit Test Access Controls

3

Part of #13304 Refactored test cases GetUsageStatisticsActionTest.java to PublishFeedbackSessionActionTest.java (71-78) and StudentCourseJoinEmailWorkerActionTest.java(94). Details recorded here: [Refactoring_Report.md](https://github.com/user-attachments/files/23019990/Refactoring_Report.md)