Console throws warnings and a MissingReferenceException error for XR packages when doing a clean project import

Reproduction steps:
1. Open the attached project “bug-xr-packages.zip“
2. Look at the Console

Expected result: There are no warnings or errors
Actual result: There are 2 warnings and an error - “MissingReferenceException: The object of type 'UnityEngine.XR.OpenXR.Features.Mock.MockRuntime' has been destroyed but you are still trying to access it.”

Reproducible with: 2021.3.27f1, 2022.3.1f1, 2023.1.0b19, 2023.2.0a11
Not reproducible with: 2023.2.0a18
Fixed in: 2023.2.0a12

Reproducible on: macOS 13.4 (Intel)