Improves .text_truncate() in combination with .line_clamp()

<img width="384" height="124" alt="Screenshot 2026-05-21 at 4 28 59 PM"
src="https://github.com/user-attachments/assets/3decc78c-8d5d-4d34-84c5-4274a2d12bea"
/>
<img width="385" height="143" alt="Screenshot 2026-05-21 at 4 26 23 PM"
src="https://github.com/user-attachments/assets/f807b19a-6834-4504-9749-e16b8d68a7aa"
/>

This was previously broken because we assumed lines would break evenly.

Release Notes:

- Improved truncation of multi-line text in the UI