273 - Session Absent Student Updates

[adescoteaux1]

Description

Link to Ticket

@michelleli04 confirm that this is a good optimization
fixed - only present students show up on the select student for game page and rate students page

How Has This Been Tested?

Please describe the tests that you manually ran to verify your changes (beyond any unit/integration tests written and ran).

Checklist

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have written unit tests for my code and tested it manually
• New and existing unit tests pass locally with my changes
• I have updated the OpenAPI spec, if needed

closes #273

[michelleli04]

i thought i alr approved this