QIcon::fromTheme - QIconLoaderEngine applies scaling wrongfully

Using QIcon::fromTheme with svgs calls the virtual_hook of QIconLoaderEngine before it calls the QSvgIconEngine one.

The applied scaling in the QIconLoaderEngine leads to pixelated icons.

In contrast, setting the Icon via QIcon::addFile creates the QSvgIconEngine directly without extra scaling.

I attached a minimal working example which shows the issue.