fix(ui): CSV importer dialog width overflow

[Jarro01X]

Checklist

• [X] Read CONTRIBUTING.md.
• [X] PR title is short and non-generic (see previously merged PRs for examples).
• [X] PR only implements a single feature or fixes a single bug.
• [X] Tests passing (uv run pytest tests)?
• [X] Lint / pre-commits passing (pre-commit run --all-files)?

Description

Fixing CSV Importer Dialog window.

Screenshots / Recordings

https://github.com/user-attachments/assets/d1a68b1e-2a54-49c4-b2cd-5cf66874929f

Steps to QA

1. Go to Tables
2. Create a Table
3. Try to import the CSV provided through Discord