The source project of this merge request has been removed.
Backport DataDeviceV3 and related patch
This backports https://codereview.qt-project.org/c/qt/qtwayland/+/334777 . While not marked for backport upstream, it is rather important to backport for us as it fixex an important issue where the drag and drop operation gets stuck until you return to the source application.
It also backports https://codereview.qt-project.org/c/qt/qtwayland/+/382017 which depends on the above change and is needed so drag and drop between windows using touch doesn't crash the source application.