mod_delegation: fix bare jid disco nesting
bare jid info discovery hook has been accidentally removed a while ago, as a result disco
nesting for bare jids was not working anymore.
---
summary: Block s2s connections based on admin blocklists
...
This module uses the blocklists set by admins for blocking s2s
connections.
So if an admin blocks a bare domain using [Blocking Command][xep191]
via [mod\_blocklist][doc:modules:mod_blocklist] then no s2s connections
will be allowed to or from that domain.