Describe the bug

Since moving to osbuild for our installer, we no longer produce the network installer bits needed for things like PXE boot or HTTP boot.

Example in Fedora 39:
https://kojipkgs.fedoraproject.org/compose/iot/Fedora-IoT-39-20240118.0/compose/IoT/x86_64/os/

Now in Fedora 40:
https://kojipkgs.fedoraproject.org/compose/iot/Fedora-IoT-40-20240118.0/compose/IoT/x86_64/

Included on the osbuild produced installer iso:

EFI
└── BOOT
    ├── BOOTAA64.EFI
    ├── fonts
    │   └── unicode.pf2
    ├── grubaa64.efi
    ├── grub.cfg
    └── mmaa64.efi
images
├── efiboot.img
├── install.img
└── pxeboot
    ├── initrd.img
    └── vmlinuz

Missing from F40 is the boot.iso. F39 boot.iso.