Bug 30879: Allow biblionumber as sort option in Elasticsearch

Repeat previous tests with Elasticsearch engine
You will need to reindex and reset mappings to pickup the changes form the file

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

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

Koha/SearchEngine/Elasticsearch/QueryBuilder.pm

@@ -700,6 +700,7 @@ sub _convert_sort_fields {
         relevance   => undef,       # default
         title       => 'title',
         pubdate     => 'date-of-publication',
+        biblionumber => 'local-number',
     );
     my %sort_order_convert =
       ( qw( desc desc ), qw( dsc desc ), qw( asc asc ), qw( az asc ), qw( za desc ) );

admin/searchengine/elasticsearch/mappings.yaml

@@ -768,14 +768,14 @@ authorities:
       - facet: ''
         marc_field: 001
         marc_type: marc21
-        sort: ~
+        sort: 1
         suggestible: ''
       - facet: ''
         marc_field: 001
         marc_type: unimarc
-        sort: ~
+        sort: 1
         suggestible: ''
-    type: string
+    type: number
   personal-name:
     label: personal-name
     mappings:
@@ -2158,14 +2158,14 @@ biblios:
       - facet: ''
         marc_field: 999c
         marc_type: marc21
-        sort: 0
+        sort: 1
         suggestible: ''
       - facet: ''
         marc_field: 001
         marc_type: unimarc
-        sort: 0
+        sort: 1
         suggestible: ''
-    type: string
+    type: number
   location:
     facet_order: 3
     label: location