/usr/lib/libgnome-desktop-2.so is in libgnome-desktop-dev 1:2.32.1-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libgnome-desktop-2.so.17.1.5
/usr/lib/libgnome-desktop-2.so.17.1.5