The refactoring of dnd with f8944a7f07
added a regression which results in a need to reimplement
dragMoveEvent() on the drop side. Before this change it was possible to
accept the dnd in dragEnterEvent() without again accepting it in
dragMoveEvent().
Fix it in a similar way it's done in
QGuiApplicationPrivate::processDrag() by prefilling the first simulated
QDragMoveEvent with the values from the previous QDragEnterEvent before
it is sent to the drop receiver.
Fixes: QTBUG-72844
Change-Id: I1300dd02b7f1d9dcd44ecefa8335f92ad6c6cafa
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>