How to reproduce:
1. Open the “OpenXRAssetBugRepro_2“ project
2. Navigate to “Edit/Project Settings/XR Plug-in Management/Project Validation“
3. Observe the warnings
4. Navigate to the “Assets > XR > Settings“ in the Project window
5. Expand the “OpenXR Package Settings.asset“
6. Observe the amount of the “XRPerformanceSettingsFeature“

Expected result: The warning “[OpenXR] The OpenXR Package Settings asset has duplicate settings and must be regenerated.“ is not shown and no duplicates of the “XRPerformanceSettingsFeature“ appear
Actual result: The warning “[OpenXR] The OpenXR Package Settings asset has duplicate settings and must be regenerated.“ is shown and the duplicates of the “XRPerformanceSettingsFeature“ appear

Reproducible with: 1.11.0 (2021.3.40f1, 2022.3.35f1, 6000.0.8f1)
Not reproducible with: 1.10.0, 1.11.0-exp.1 (2021.3.38f1, 2022.3.32f1, 6000.0.2f1)

Reproducible on: macOS 14.5 (Intel), Windows 10 (User’s)
Not reproducible on: No other environments tested

Notes:
- If you click on the “Fix” button near the “[OpenXR] The OpenXR Package Settings asset has duplicate settings and must be regenerated.“ warning, a new “OpenXR Package Settings.asset“ is created and the old one stays, but the old one has all existing settings wiped
- Deleting the “XR” folder and replacing it with the “XR” folder from a freshly unzipped “OpenXRAssetBugRepro_2“ project does not fix the issue