/usr/share/autostart/xsettings-kde.desktop is in xsettings-kde 0.9-2+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | [Desktop Entry]
X-DBUS-StartupType=none
Exec=xsettings-kde
Name=XSettings Daemon for KDE
Type=Application
X-KDE-StartupNotify=false
OnlyShowIn=KDE;
X-KDE-autostart-phase=1
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