Remove debounce on query box

[LucasPickering]

Description

Describe the change. If there is an associated issue, please include the issue link (e.g. "Closes #xxx"). For UI changes, please also include screenshots.

It's convenient in some scenarios, but with command-based filtering it ends up just being really annoying.

Known Risks

What issues could potentially go wrong with this change? Is it a breaking change? What have you done to mitigate any potential risks?

This does bring us back to it being more cumbersome to do repeated filters, since you have to keep hitting / to get back into the search box. We could mitigate this by adding a keybind to mean "submit but stay in focus", e.g. shift+enter.

QA

How did you test this?

Existing tests

Checklist

• Have you read CONTRIBUTING.md already?
• Did you update CHANGELOG.md?
  • Only user-facing changes belong in the changelog. Internal changes such as refactors should only be included if they'll impact users, e.g. via performance improvement.
• Did you remove all TODOs?
  • If there are unresolved issues, please open a follow-on issue and link to it in a comment so future work can be tracked