ctdb-recovery: Use correct struct ban_node_state type for state

ctdb-recovery: Use correct struct ban_node_state type for state

If this codepath is hit, ctdb aborts with:

ctdb/server/ctdb_recovery_helper.c:2687: Type mismatch: name[struct ban_node_state] expected[struct node_ban_state]")
    at ../../lib/talloc/talloc.c:505

Fix this by using the correct type.

Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Wed May  3 08:04:09 UTC 2023 on atb-devel-224