Recommended Asset Manager package in 6000.4.0a1 Package Manager is not the latest package version (1.5.1)

Steps to reproduce:

1. Create a new Unity project on 6000.4.0a1 using the Universal 3D template
2. Open the Package Manager (Window > Package Manager)
3. Search for "Asset Manager" package in the Unity Registry
4. Observe the recommended version

Actual results: 1.5.1 package version is recommended

Expected results: Newest package version is recommended

Reproducible with versions: 6000.4.0a1

Not reproducible with versions: 6000.0.58f1, 6000.2.6f1, 6000.3.0b3

Tested on (OS): Ubuntu 24.04, macOS Silicon Sequoia 15.6.1