Make cgnslib dependency not create desktop icons
(on vtk-0:9.1.0-17.fc37.x86_64 with fedora)
VTK is used as a transitive dependency for video-related fedora packages such as mlt-0:7.12.0-4.fc37.x86_64
However, it in turn causes cgnslib-common-4.3.0-3.fc37.noarch to be installed, which causes the icons of a bunch of CGNS applications to pop up in the end users desktop which is very annoying since the end user does not know where they came from. When packaging for distros, the CGNS dependencies should have their .desktop files set to not be displayed.