HoverHandler with acceptedDevices:PointerDevice.Mouse reacts to touch events

When a HoverHandler is defined with acceptedDevices: PointerDevice.Mouse it also receives touch events.

This makes it hard to have mouse specific interaction on tactile screens, as every touch will also trigger a mouse interaction.

The following sample code (adapted from https://doc.qt.io/qt-5/qml-qtquick-hoverhandler.html#acceptedDevices-prop) demonstrates the issue.

• Interaction with mouse -> prints mouse
• Interaction with touch screen -> prints touch screen and mouse alternating
• Interaction with stylus -> prints mouse (Lenovo X1 Yoga tested with Fedora 32, might be solved by 8e822e98 or an issue on a different layer. I can open a separate issue if requested.)

Item {
   HoverHandler {
       acceptedDevices: PointerDevice.Mouse
       onHoveredChanged: console.log("mouse")
   }
   HoverHandler {
       acceptedDevices: PointerDevice.Stylus
       onHoveredChanged: console.log("stylus")
   }
   HoverHandler {
       acceptedDevices: PointerDevice.TouchScreen
       onHoveredChanged: console.log("touch screen")
   }
}