'Selected Children Outline' color is applied when selecting any GameObject

Steps to reproduce:

1. Create and open a new 3D URP project
2. Create one Cube in the Scene and select it
3. Open 'Edit -> Preferences -> Colors -> Scene'
4. Change the color of "Selected Children Outline"
5. Observe the Scene view

Actual results: The outline on the Cube changes color

Expected results: Nothing changes

Reproducible with versions: 6000.6.0a1, 6000.7.0a1

Not reproducible with versions: 6000.0.78f1, 6000.3.18f1, 6000.5.1f1, 6000.5.0a7

Tested on (OS): Windows 11 Pro (25H2)

Notes:

• Selected Children and Parent GameObjects have the same color applied to their outlines
• Appears to be reproducible only in 3D URP projects (likely regressed in 17.2.1)