"PathIteratorTesting" shader unexpectedly appears in dropdown and may be improperly exposed or named

Steps to reproduce:

1. Create a new Unity project
2. In the Project window, create a new Material (Right-click > Create > Material)
3. Select the Material
4. In the Inspector window, open the “Shader” dropdown window
5. Observe the list

Actual results: User gets "PathIteratorTesting" option

Expected results: From the string which ends with "Testing", it is a question whether it should be in the list:

• If not, it should be removed
• If yes, it should be displayed in human language: "Path Iterator Testing"

Reproducible with versions: 6000.4.1f1, 6000.5.0b4, 6000.6.0a2

Not reproducible with versions: 6000.3.13f1

Tested on (OS): Tahoe 26.4