Since the kernel 6.12.0-55.17.1.el10_0.x86_64 update, my system has been suspending when no users are logged in. It was not happening before the update. I have traced the fix to setting dconf values for the gdm account to nothing using the commands,
su - gdm -s /bin/sh
gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type nothing
gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type nothing
I assume that the settings changed in the update and is also present in rhel 10.