Steps to reproduce:
1. Create HDRP template project
2. Update to 7.1.5
3. Observe the following error in the console:
System.Exception: Cannot load. Incorrect path: Packages/com.unity.render-pipelines.high-definition//Editor/DefaultDXRScene/DefaultSceneRoot.prefab Null returned.
at UnityEngine.Rendering.ResourceReloader.Load (System.String path, System.Type type, System.Boolean builtin) [0x00036] in C:\Github\SRP_V4\com.unity.render-pipelines.core\Runtime\Utilities\ResourceReloader.cs:165

Expected result: DefaultSceneRoot.prefab should not return null

Reproduced in: 2019.3.0b11
HDRP package reproduced in: 7.1.5