Build fails with error “... The type or namespace name 'Meta' does not exist in the namespace 'UnityEngine.XR.OpenXR.Features’…” when building Mixed Reality template project

Steps to reproduce:
1. Create a Mixed Reality template project
2. Build the project
3. Observe the Console

Actual results: Build fails with error 

Assets\MRTemplateAssets\Scripts\OcclusionManager.cs(5,38): error CS0234: The type or namespace name 'Meta' does not exist in the namespace 'UnityEngine.XR.OpenXR.Features' (are you missing an assembly reference?)

Expected results: Build is successful

Reproducible with versions: 2.1.1 (6000.0.20f1, 6000.0.47f1, 6000.1.0f1, 6000.2.0a9)
Not reproducible with versions: 1.1.1 (2022.3.61f1)
Cannot reproduce with versions: 2021.3.51f1 (no Mixed Reality template), 6000.0.19f1 (package errors)

Tested on (OS): macOS Sequoia 15.3.1 (Intel), Windows 11, Windows 10

Note: Couldn't find FAV due to errors from 6000.0.19f1 and below