Bug 26051: Add sort=1 on cn-sort in mappings.yaml

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

admin/searchengine/elasticsearch/mappings.yaml

@@ -1530,7 +1530,7 @@ biblios:
       - facet: ''
         marc_field: 9526
         marc_type: marc21
-        sort: ~
+        sort: 1
         suggestible: ''
     type: ''
   cn-suffix: