QGraphicsColorizeEffect: Fix for high DPI scaling

Preserve the device pixel ratio.

Task-number: QTBUG-60026
Change-Id: I91a1bda6ce4defd064ec7edfcea40ff192a9068f
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

src/widgets/effects/qpixmapfilter.cpp

@@ -1111,6 +1111,7 @@ void QPixmapColorizeFilter::draw(QPainter *painter, const QPointF &dest, const Q
         srcImage = srcImage.convertToFormat(srcImage.hasAlphaChannel() ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32);
         destImage = QImage(rect.size(), srcImage.format());
     }
+    destImage.setDevicePixelRatio(src.devicePixelRatioF());
 
     // do colorizing
     QPainter destPainter(&destImage);