[Sync] develop with upstream 0.24.1 (the headset rendering squash, IBL fallback, pack-loader LOD: #1359, #1375–#1387) - #82

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-python@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/