Removed Feature Enhancement FOCUS-54088 Attendance Thresholds Letter Queue & Enrollment Filtering

Removed: This update enhances Attendance Thresholds by adding a new Letter Queue option, allowing thresholds to place letters into the letter queue instead of sending communications when a template is selected. Execution history output has also been improved to display communication results in a clear, table-based format for easier review. In addition, threshold logic now only evaluates attendance for actively enrolled and scheduled students, ensuring alerts and letters are generated only for students who are currently eligible.