next.js

8eca4409 - Add comment explaining staticPathKey vs ssgCacheKey (#80911)

Add comment explaining staticPathKey vs ssgCacheKey (#80911) Follow-up form https://github.com/vercel/next.js/pull/80908 adding comment from review explaining difference. --------- Co-authored-by: Zack Tanner <1939140+ztanner@users.noreply.github.com>