Landscape Streaming Proxy is not accessible in the Outliner

Hello ! How can i enable LandscapeStreamingProxy Actor when i create landscape ? I recently upgraded my project from ue 4.27.2 to ue 5.0.3, and when i create landscape i didn’t have LandscapeStreamingProxy in child of my landscape.
Here you got 2 screens the first is from my basic ue 5 project and the seconds from my upgraded project.
BrandNewUE5Project
Projet Updated