It's possible that those are just the discarded exoskeletons of the spider and not dead spiders. I'm sure if a spider figured out how to get in there that it can definitely get back out. You'd be surprised how small of a space they can squeeze through! Take care.

Very similar, though, I agree. The eye arrangement is very different from that of a wolf spider. This is a male specimen of what appears to be the genus Coras (family Amaurobiidae, formerly Agelenidae). Male spiders of all 'stripes' wander in search of mates, and that is the more likely reason for how they came to be in the light fixture.