[Dice Example] Background missing and lighting issue running on WASM

Background is missing and lighting is incorrect, all the objects in the application are very dark when running the application on webassembly.

Steps to Reproduce:

1. Open Dice example
2. Build and run it on Qt 6.5.5 webassembly (multi-threaded)

Actual Result:

Background is missing and all the objects are almost black

Expected Result:

Background is displayed and lighting is correctly implemented

Reproducibility: 100%

System Configuration:

MacOS 12.6.8, Mozilla Firefox