Play mode Scenarios dropdown does not close when selecting/clicking on an active Scenario

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Install the Multiplayer Play Mode package (com.unity.multiplayer.playmode)
3. Open the Play Mode Scenarios dropdown next to the Play Mode button
4. Click the "Default" Scenario
5. Observe the Play Mode Scenarios dropdown

Actual results: Nothing happens

Expected results: The dropdown is closed

Reproducible with versions: 6000.0.66f1, 6000.3.5f1, 6000.4.0b5, 6000.5.0a5

Tested on (OS): MacOS Silicon Tahoe 26.2