### Changes

Adds a checkbox to toggle between multiline cells (current behavior) and
single-line rows that clip overflow, so wide CSVs stay compact when full
cell content isn't needed at a glance.

#### Demo
| Before | After |
| --- | --- |
| No single line mode | <img width="662" height="316" alt="image"
src="https://github.com/user-attachments/assets/3f2a9673-557c-4539-b755-9ff2633de2d7"
/> |
| <img width="666" height="287" alt="image"
src="https://github.com/user-attachments/assets/703f7214-a722-4fa5-9125-f043439e21b2"
/> | <img width="660" height="317" alt="image"
src="https://github.com/user-attachments/assets/be6ca912-e686-44da-90eb-58f09fab51f1"
/> |

### Testing

- Toggle "Display multiline rows" off: cells clip to one line with
ellipsis instead of wrapping
- Toggle it back on: cells wrap and grow to show full content
- Resize the window / change font size: single-line clip height tracks
the actual text line height instead of a stale hardcoded value

Release Notes:

-  N/A