datavisualization for qt6 not detected

When building git master with
```
  qmake(6)
  make
```
I'm getting

`Project MESSAGE: Build configuration: Linux all dynamic Project ERROR: Unknown module(s) in QT: datavisualization `
similar to https://github.com/narunlifescience/AlphaPlot/issues/17 for qt5

https://archlinux.org/packages/extra/x86_64/qt6-datavis3d/ is installed on my system
