Grub requires whole redhat-logos package while only one file is needed. The rest of redhat-logos files is for desktop, therefore not needed for minimal installation. Moving /boot/grub/splash.xpm.gz to a package would solve it.
Done in rawhide (10.0.1-3).
Actually, I'm not going to revert this. Making this change needlessly complicates the Fedora spin kickstart files, and makes it more complicated for Fedora derived spins to pull out the logo packages. There is no benefit here, the fedora-logos package does not depend on anything aside from bash and coreutils, so it doesn't pull in any other packages. Also, the while fedora-logos package is 2MB installed, so we're not saving notable amounts of disk space.
There is a benefit of having the splash image in separate package. You will not get conflicts, when you have 2 systems installed - one with bootloader and the second one without bootloader with shared /boot. You will not notice it when there are 2 Fedoras, but when you install RHEL after Fedora, then you will get the RHEL splash shown.
That's a rather extreme corner case, and its one that someone has to go a bit out of their way to trigger. Also, it isn't really an RPM conflict, as the RHEL install onto the shared /boot isn't looking at the Fedora RPM database, so having the grub splash in a separate package isn't going to solve the issue.