For performance, the triangulation of a painter path is stored for
reuse. Re-triangulation was only done if the path was to be painted at
a significantly different scale AND it contained a curve (bezier)
element. But also the triangulation of a path with only straight lines
can lose precision if rendered at a small scale, and so look bad when
used at a higher scale factor.
Fix by removing the mentioned curve element condition.
Task-number: QTBUG-68873
Change-Id: Id3492514e9382a5828377b7bafea8cfac7b850a6
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
e5b3db841d