pager: Add scroll mode WNCK_PAGER_SCROLL_NONE
Hi, I would like to propose an option to disable scrolling as Xfce's Workspace Switcher plugin supports disabling that for one of its view mode but not for the one that uses libwnck's pager.
See downstream issue: https://gitlab.xfce.org/xfce/xfce4-panel/-/issues/253