Added FOCUS-43107 - Run Scheduler: Correct Scheduling Duplicate S2 Parent/Child Sections

This update resolves an issue where, if a section was set up as a parent section with semestered S1 and S2 sections, and a student had added requests for both semesters, the Semester 2 section was duplicated in the student's schedule upon running the scheduler. With this fix, the duplication issue is corrected, ensuring accurate scheduling for students.