I can’t replicate the issue you are having I was however wrong about the ram model being updated in the 2024.4 release.
Once I applied the patch found here I could successfully launch a simulation with ghdl GHDL 5.0.0-dev (4.1.0.r479.gc319b79b5) [Dunoon edition]
I am running the design found in designs/noelv-generic with CFG_DISAS=3 (config.vhd)