/usr/share/kservices5/ is in kwin-data 4:5.12.4-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kservices5/desktop.desktop
/usr/share/kservices5/kcmkwineffects.desktop
/usr/share/kservices5/kwin/
/usr/share/kservices5/kwin-script-desktopchangeosd.desktop
/usr/share/kservices5/kwin-script-enforcedeco.desktop
/usr/share/kservices5/kwin-script-minimizeall.desktop
/usr/share/kservices5/kwin-script-synchronizeskipswitcher.desktop
/usr/share/kservices5/kwin-script-videowall.desktop
/usr/share/kservices5/kwin/kwin4_decoration_qml_plastik.desktop
/usr/share/kservices5/kwin/kwin4_effect_dialogparent.desktop
/usr/share/kservices5/kwin/kwin4_effect_eyeonscreen.desktop
/usr/share/kservices5/kwin/kwin4_effect_fade.desktop
/usr/share/kservices5/kwin/kwin4_effect_fadedesktop.desktop
/usr/share/kservices5/kwin/kwin4_effect_frozenapp.desktop
/usr/share/kservices5/kwin/kwin4_effect_login.desktop
/usr/share/kservices5/kwin/kwin4_effect_logout.desktop
/usr/share/kservices5/kwin/kwin4_effect_maximize.desktop
/usr/share/kservices5/kwin/kwin4_effect_morphingpopups.desktop
/usr/share/kservices5/kwin/kwin4_effect_scalein.desktop
/usr/share/kservices5/kwin/kwin4_effect_translucency.desktop
/usr/share/kservices5/kwin/kwin4_effect_windowaperture.desktop
/usr/share/kservices5/kwinactions.desktop
/usr/share/kservices5/kwinadvanced.desktop
/usr/share/kservices5/kwincompositing.desktop
/usr/share/kservices5/kwindecoration.desktop
/usr/share/kservices5/kwinfocus.desktop
/usr/share/kservices5/kwinmoving.desktop
/usr/share/kservices5/kwinoptions.desktop
/usr/share/kservices5/kwinrules.desktop
/usr/share/kservices5/kwinscreenedges.desktop
/usr/share/kservices5/kwinscripts.desktop
/usr/share/kservices5/kwintabbox.desktop
/usr/share/kservices5/kwintouchscreen.desktop