WASM: Color selected from QColorDialog is not set

Steps to reproduce:

1. Build and run any project with QColorDialog, e.g.:
   1. https://doc.qt.io/qt-6/qtsvg-svggenerator-example.html
   2. https://doc.qt.io/qt-6/qtwidgets-richtext-textedit-example.html 

Expected: Color should be selected and applied.

Actual: The user can select the color but it does not change the object's color.

Reproducibility:  100%