Running Project Auditor's analysis only on "Assets" also analyses the "Shaders" when only "Assets" is selected

How to reproduce:
1. Create a new Unity project
2. Go to Window -> Analysis -> Project Auditor -> three-dot menu -> Preferences
3. In "Project Areas" select only "Assets"
4. In the Project Auditor, click "Start Analysis"
5. Observe the analyzed areas

Expected results: Only "Assets" are analysed
Actual results: "Assets" and "Shaders" are analysed

Reproducible with: 6000.2.11f1, 6000.3.0b10, 6000.4.0a5, 6000.5.0a1

Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested