"NullReferenceException" error and memory leak warning is thrown when Entities Graphics package is installed

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Open the Package Manager window (Window > Package Management > Package Manager)
3. Install the Entities package
4. Install the Entities Graphics package
5. Observe the Console window

Actual results: "NullReferenceException: Object reference not set to an instance of an object" error is thrown, and "Leak Detected : Persistent allocates 12 individual allocations." memory leak warning is thrown

Expected results: No errors are thrown

Reproducible with versions: 6000.0.60f1, 6000.2.8f1, 6000.3.0b6 (342471dcaf1d)

Not reproducible with versions: 6000.3.0b5, 6000.3.0b7, 6000.4.0a3

Tested on (OS): MacOS Silicon Sequoia 15.6.1