/usr/include/KF5/KJobWidgets/ is in libkf5jobwidgets-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KJobWidgets/KAbstractWidgetJobTracker
/usr/include/KF5/KJobWidgets/KDialogJobUiDelegate
/usr/include/KF5/KJobWidgets/KJobWidgets
/usr/include/KF5/KJobWidgets/KStatusBarJobTracker
/usr/include/KF5/KJobWidgets/KUiServerJobTracker
/usr/include/KF5/KJobWidgets/KWidgetJobTracker
/usr/include/KF5/KJobWidgets/kabstractwidgetjobtracker.h
/usr/include/KF5/KJobWidgets/kdialogjobuidelegate.h
/usr/include/KF5/KJobWidgets/kjobwidgets.h
/usr/include/KF5/KJobWidgets/kjobwidgets_export.h
/usr/include/KF5/KJobWidgets/kstatusbarjobtracker.h
/usr/include/KF5/KJobWidgets/kuiserverjobtracker.h
/usr/include/KF5/KJobWidgets/kwidgetjobtracker.h