### Summary

- Adds missing unit tests for relevant files missing them
- Changes filter search to fire request on 'Enter'
- Breaks out the main ExceptionViewer component into smaller components to make more readable and better tested
- Updates utility bar to have the specific list description text next to it as proposed by @spong in elastic#68294 (comment)
- Adds loading state any time async request occurs
- Now fetches list on list type toggle (if user selects to view either only detections or endpoint items), before was simply filtering already fetched items