CodeEditor: Line number background color in dark mode

Flow Version

current docs

Bug Description

When view the documentation for CodeEditor component in DarkMode, the current line number background is bright. This makes the line number unreadable.

Steps to Reproduce

1. Open documentation for CodeEditor component in DarkMode
2. Notice Line number background

Expected Behavior

contrast color used

Actual Behavior

bright color used

How much does this bug impact you?

🟡 Moderate – It's annoying but there's a workaround

Relevant Logs or Error Output

Browser Version

Safari Version 26.6 (21624.4.5.11.5)

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• I have provided all necessary information to reproduce the issue.