Changing Hierarchy Color for a Sub Scene spams new Sub scenes in the Hierarchy window

Steps to reproduce:
1. Create new Unity project
2. Install Entities package via Package Manager window
3. Create a new Sub Scene in the Hierarchy window
4. When Sub Scene is selected, in Inspector window open Hierarchy Color picker
5. Change the color
6. Observe Hierarchy window when changing color 

Actual results: when changing Hierarchy color, New Sub Scenes are spammed in the Hierarchy window
Expected results: when changing Hierarchy color, no New Sub Scenes are spammed in the Hierarchy window

Reproducible with versions: 6000.5.0a9 (acc4c1f79cd5)
Not reproducible with versions: 6000.4.0b12, 6000.5.0a8 (d36222f39966) 

Tested on (OS): macOS Silicon Tahoe 26.3.1 (M1)