Scheduled token refresh fails with ClientInvalidUserState when a service-account server passes its refresh window

How to reproduce:

1. Open the attached project “IN-150127”
2. Open “Project Settings → Services” and link the Unity project to a Cloud project
3. In a web browser, open “cloud.unity.com”
4. In the navigation panel on the left, select “Administration → Service accounts”
5. Create a new Service Account
6. In the opened window select “Add key”
7. Add the created Key ID and Secret key to the “server-auth-credentials.json” file in the downloaded project’s directory
8. Scroll down to “Project roles” and select “Manage project roles”
9. Select the Cloud project that was linked in step 2
10. Under “Admin” select “Unity Environments Admin” and save the change
11. In the Editor, open the “Repro” scene
12. Enter Play Mode
13. Observe the Console

Actual result: Token refresh fails with a “Failed to refresh access token due to network error or internal server error, will retry later.” warning
Expected result: Token refresh succeeds and the server state is not moved to “Expired”

Reproducible with: 3.0.0 (6000.0.0f1), 3.7.3 (6000.7.0a4)

Reproducible on: macOS 26.5.2 (M4 Max)
Not reproducible on: No other environments tested