Help box text under “Keyword Declaration Overrides” in Build Profiles and Project Settings window has poor visibility

Steps to reproduce:

1. Create a project
2. Go to "Unity" -> "Settings" -> "General"
3. Set "Editor Theme" to "Light"
4. Go to "File" -> "Build Profiles"
5. Create a build for the selected platform
6. Select the newly created build
7. Click the "Add Settings" button
8. Select the "Graphics Settings" item
9. Verify that the "Graphics Settings" section is displayed in the details window
10. Expand it
11. Click "+" under the "Keyword Declaration Overrides"
12. Observe the UI

Actual results: Text in the help box is poorly visible

Expected results: Text should be adjusted to the "Light" theme

Reproducible with versions: 6000.3.0f1, 6000.4.0a5, 6000.5.0a2

Can’t test with versions: 6000.2.13f1 as "Add Settings" functionality does not exist.

Tested on (OS): macOS - Tahoe 26.1