Shifting Freshman Table

# Issue
When switching between dropdown options (as shown below), the table containing the freshmen packets shifts rightward out of the frame. (Frame being the area provided for tables)

This is unexpected behavior as the table should only update its order without shifting rightward.

# Potential Trails to Follow

I believe this stems from the tables.js file, specifically the controller for how the table is updated when a dropdown item is selected. I've attached a link to the blob below.

https://github.com/ComputerScienceHouse/packet/blob/develop/packet/static/js/tables.js

Start by reproducing the shift when switching dropdown options, then read packet/static/js/tables.js, especially the controller that updates the table after a selection. Trace how the freshmen packet table is reordered and verify that the frame position is preserved. Done means changing the dropdown updates only the table order without moving it rightward out of frame.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.