Search Query block value dropdown opens in the top-left corner of the screen in the Entity Systems window

Steps to reproduce:

1. Create a new 3D URP project
2. Install the Entities package (com.unity.entities)
3. Go to Window > Entities > Systems
4. Click + icon in the search to add query block
5. Select "Component Count" block
6. Open its dropdown by clicking on the arrow
7. Observe the opened dropdown window

Actual results: The value dropdown opens in the top-left corner of the screen

Expected results: The value dropdown opens directly below the query block's arrow

Reproducible with versions: 6000.5.0a9 (acc4c1f79cd5), 6000.5.0b10, 6000.6.0a6

Not reproducible with versions: 6000.5.0a8

Tested on (OS): Ubuntu 24.04, Windows 11

Notes:

• Does not reproduce with the same query block in the Global Search window
• Reproduces with all Query blocks