Package Manager redirection buttons are changed to "Checkmarks" after installing additional Packages in the Multiplayer Center

How to reproduce:
1. Create a new Unity project
2. Go to Window -> Multiplayer -> Multiplayer Center
3. In the Multiplayer Center, Casual co-op -> Select
4. In the "Get Started" tab, under the "Essentials" click "Install all"
5. Observe the Package Managers buttons after the install

Expected results: The buttons are still using the Package Manager icon
Actual results: The buttons are using checkmarks as buttons which is not intuitive

Reproducible with: 2.0.0 (6000.6.0a5)
Not reproducible with: 1.0.1 (6000.5.0b7)

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