Update Edit Student to Modal to match Design Systems -modal portion [ENG]

[katconnors]

• [x] Create a modal component to Turn Edit Student render from a column of containers to a modal per the Design Systems. Please keep the order of the entries from the current page as the order in which the data is entered by the CM (first name, last name, email, grade, iep start date, iep end date) Feel free to use MUI components or styled html components, whichever you think works best!
• [x] The data should pre-populate with the data already in the student profile. The only data that might not already exist is the iep start and end dates, which would default to the default for a date picker (usually "mm/dd/yyyy")
• [x] Clean up old code in pages/students/[student_id]