disk_block_cache_wrapped: prefer prefetch status from sync cache
disk_block_cache_wrapped: prefer prefetch status from sync cache

Issue: KBFS-3744

keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client