Merge branch 'sctp-handle-wrapped-and-duplicate-reconf-responses'

Jun Yang says:

====================
sctp: handle wrapped and duplicate RECONF responses

Fix response sequence zero lookup first, then make RECONF response
handling idempotent with an outstanding-request bitmask.
====================

Link: https://patch.msgid.link/20260824081832.98717-1-juny24602@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>