This PR makes the mentioned file creases/buttons use `FileIcons`.

<img width="700" alt="Screenshot 2025-01-21 at 11 20 49 AM"
src="https://github.com/user-attachments/assets/876da534-c11a-4d13-af82-a5948863f954"
/>

Release Notes:

- N/A

Co-authored-by: Anthony Eid <hello@anthonyeid.me>