Highlighting broken in slash command suggestions

[igstan]

Describe the bug

The text color for the highlighted suggestion when typing a slash command is very hard to read.

Affected version

1.0.49

Steps to reproduce the behavior

1. Use a terminal with a light theme
2. Open fresh copilot instance
3. Type /de
4. Highlighted item is hard to read because the text color is very similar to the background color used to denote focus.

Expected behavior

Highlighted item uses a color that stands out against the selection background.

Additional context

No response