Ubuntu Noble's likely last point release lands, then loses its desktop download

Ubuntu 24.04's likely final scheduled point release barely made it out the door before an installer bug sent its x86-64 desktop image back to the workshop. Meanwhile, October's interim release is approaching. 24.04.5 was released on September 10, but its x86-64 desktop installation image was withdrawn after a bug caused the installer to crash when users selected the extended installation option. Other images and official flavors are unaffected. For the time being, if you try to download the grap