Before this patch, we did not set the view item positions in the views.
This was fine as they were ignored until
b780eaf6a063a7efe03417cf6b7008a188e222a4 added a condition to early exit
on invalid positions. This then broke all qss background styling using
QStyleOptionViewItem::ViewItemPosition as they were always invalid.
Set the position when trying to draw a cell of the view before
reaching the code handling the qss rules for backgrounds.
Fixes: QTBUG-137346
Pick-to: 6.10 6.9 6.8
Change-Id: I83d7a3ea7b9bab98889791bb807988a74e355b93
Reviewed-by: Santhosh Kumar <santhosh.kumar.selvaraj@qt.io>
5aa1bc4621