"Preload Time Limit Per Frame (ms)" is set to "-1" and the setting is not saved when enabled, gets unticked again after reselecting the "Graphics" tab

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Open the Project Settings window (Edit > Project Settings)
3. Select the "Graphics" tab
4. Tick the "Preload Shaders After Showing First Scene" setting
5. Observe the "Preload Time Limit Per Frame (ms)" field that appears under it
6. Select another tab (e.g. "Player") and select the "Graphics" tab again
7. Observe the "Preload Shaders After Showing First Scene" setting

Actual results: "Preload Time Limit Per Frame (ms)" is set to "-1" and the setting is not saved - "Preload Shaders After Showing First Scene" is unticked again after reselecting the "Graphics" tab

Expected results: "Preload Time Limit Per Frame (ms)" is set to "0" and the setting remains enabled after reselecting the "Graphics" tab

Reproducible with versions: 6000.2.0a8, 6000.3.24f1, 6000.5.11f1, 6000.6.1f1, 6000.7.0a6

Not reproducible with versions: 6000.0.83f1, 6000.2.0a7

Tested on (OS): MacOS Silicon Tahoe 26.6.2