Do not use ES for Global Search when not enabled

This change makes sure that ES is not used when
it is not enabled for search

ee/changelogs/unreleased/197908-nomethoderror-undefined-method-without_count-for-kaminari-pagin.yml

+---
+title: Fix 500 error in global search for blob, wiki_blob and commit search
+merge_request: 23326
+author:
+type: fixed

ee/lib/ee/api/search.rb

@@ -12,14 +12,14 @@ module EE
           ELASTICSEARCH_SCOPES = %w(wiki_blobs blobs commits).freeze
 
           override :verify_search_scope!
-          def verify_search_scope!
-            if ELASTICSEARCH_SCOPES.include?(params[:scope]) && !elasticsearch?
+          def verify_search_scope!(resource:)
+            if ELASTICSEARCH_SCOPES.include?(params[:scope]) && !use_elasticsearch?(resource)
               render_api_error!({ error: 'Scope not supported without Elasticsearch!' }, 400)
             end
           end
 
-          def elasticsearch?
-            ::Gitlab::CurrentSettings.elasticsearch_search?
+          def use_elasticsearch?(resource)
+            ::Gitlab::CurrentSettings.search_using_elasticsearch?(scope: resource)
           end
 
           override :process_results

lib/api/search.rb

@@ -47,7 +47,7 @@ module API
         SCOPE_ENTITY[params[:scope].to_sym]
       end
 
-      def verify_search_scope!
+      def verify_search_scope!(resource:)
         # In EE we have additional validation requirements for searches.
         # Defining this method here as a noop allows us to easily extend it in
         # EE, without having to modify this file directly.
@@ -73,7 +73,7 @@ module API
         use :pagination
       end
       get do
-        verify_search_scope!
+        verify_search_scope!(resource: nil)
         check_users_search_allowed!
 
         present search, with: entity
@@ -94,7 +94,7 @@ module API
         use :pagination
       end
       get ':id/(-/)search' do
-        verify_search_scope!
+        verify_search_scope!(resource: user_group)
         check_users_search_allowed!
 
         present search(group_id: user_group.id), with: entity