Seeing as there is no heat detection, only particulate matter detection, and Halon levels are being kept above 5% for the first 60 minutes, would the light go out?
I can not answer this question, but I'd be rather nervous & surprised if they designed a system where the fire extinguisher was fired, the fire went out but the fire warning didn't indicate this. Imagine such a scenario on a 180min ETOPS sector. Have I misunderstood your comment.