Issue #2539634 by Berdir, dawehner, cilefen, mpp, claudiu.cristea, amateescu,...

Issue #2539634 by Berdir, dawehner, cilefen, mpp, claudiu.cristea, amateescu, kristiaanvandeneynde: PathItem::delete() never runs because the path field type is a computed field in disguise

(cherry picked from commit f3119f6a)