KoPathShape saveOdf and loadOdf oddities

[Stefano Bonicatti]

Hello, we have a problem in Krita with drawing a polygon or a bezier curve
(or basicly anything that uses KoPathShape) in a vector layer, then
transform it so that the lines increase their thickness, then save the file
in .kra format and then reload it: the thickness is not kept.
I've found that this is because loadOdf does something different than
saveOdf when loading and i don't get why.
First it only loads some attributes back, then it checks for some specific
element names (and in my tests i never entered in those ifs), then the
transformation matrix is baked into the viewbox and the path geometry only,
while the stroke is kept unchanged.
This is wrong though because the original transformation, before saving,
changed also the stroke thickness.
Why baking the matrix into the path geometry only? Why loadOdf doesn't just
do the "opposite" of what saveOdf do?

I tried replicating what saveOdf does writing simply this:

Q_D(KoPathShape);
loadOdfAttributes(element, context, OdfAllAttributes | OdfViewbox);
KoPathShapeLoader loader(this);
loader.parseSvg(element.attributeNS(KoXmlNS::svg, "d"), true);
d->loadNodeTypes(element);
loadOdfAttributes(element, context, OdfCommonChildElements);
loadText(element, context);

as a replacement for loadOdf and it works as expected.
Though not being 100% that this doesn't give problems somewhere else, i'm
writing here for clues.
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