Ah sorry I'm coming from a Boeing. Would have thought they would have similar procedures. We have smoke detectors in the cargo compartment, but they generate a fire warning, not a smoke warning (where there's smoke there's fire Im guessing is their thinking). And as far as I know the light extinguishes if smoke is no longer detected.
Hence, if the light stays illuminated then we evacuate. However, what if the light does extinguish? Our QRH does say not to open the cargo doors until all passengers and crew are off the aircraft. Am I going to taxi to a remote stand and wait for steps? I suppose if there's is no other indications that there is a fire then yes.