Make admission_control exception free

[mathetake]

Commit Message: Make admission_control exception free
Additional Description:
Risk Level: low
Testing: existing ones
Docs Changes: n/a
Release Notes: n/a
Platform Specific Features: n/a

[repokitteh-read-only]

As a reminder, PRs marked as draft will not be automatically assigned reviewers,
or be handled by maintainer-oncall triage.

Please mark your PR as ready when you want it to be reviewed!

🐱

Caused by: #38308 was opened by mathetake.

see: more, trace.

[mathetake]

/retest

[mathetake]

/assign @alyssawilk

[alyssawilk]

Thanks for continued clean up!