Fix mapping of languages to taxonomy terms.

modules/dgi_migrate_foxml_standard_mods/migrations/dgis_nodes.yml

@@ -1491,7 +1491,7 @@ process:
           - plugin: dgi_migrate.subproperty
             property: nodeValue
         field_record_cataloging_language:
-          - <<: *nested_mods_node
+          - << : *nested_mods_node
             query: 'mods:languageOfCataloging[normalize-space()]'
           - plugin: callback
             callable: iterator_to_array
@@ -1501,11 +1501,18 @@ process:
           - plugin: dgi_migrate.sub_process
             process_values: true
             values:
-              _vid:
-                - plugin: default_value
-                  default_value: language
-              <<: *generic_term_after
-          - <<: *generic_term_extract
+              language_term:
+                - << : *nested_mods_node
+                  query: 'string(normalize-space(.))'
+                  method: evaluate
+                - plugin: dgi_migrate.required_entity_lookup
+                  entity_type: taxonomy_term
+                  bundle_key: vid
+                  bundle: language
+                  value_key: name
+                  ignore_case: true
+          - plugin: dgi_migrate.process.single_extract
+            index: [ language_term ]
         _field_record_change_date_single:
           - << : *nested_mods_node
             query: 'mods:recordChangeDate[not(@point)]'