[BUG] Cursor invisible in text input boxes with Dark (ANSI) theme

Bug Description

When editing text in input boxes (e.g., when using /feedback), the cursor is invisible when using the "Dark (ANSI)" theme.

Steps to Reproduce

1. Set theme to "Dark (ANSI)" via /theme
2. Run /feedback (or any command that opens a text input box)
3. Try to edit text in the input box

Expected Behavior

Cursor should be visible while editing text.

Actual Behavior

Cursor is invisible, making it difficult to know where you're typing or editing.

Environment

• Theme: Dark (ANSI)