My fellow humans, I have discovered the root cause and have a solution. The systemd changes require additional changes in dracut and those changes are not released yet. There is, however, a work around:
Be sure that your /etc/dracut.conf.d/resume.conf references systemd-hibernate-resume.service, like this. Link below.
add_dracutmodules+=" resume "
install_items+=" /usr/lib/systemd/system/systemd-hibernate-resume.service "