Avoid loading pipeline status in search results

This improves the performance of search, since the pipeline status
is not displayed.

Identified in https://gitlab.com/gitlab-org/gitlab-ce/issues/56627

app/views/shared/projects/_list.html.haml

@@ -28,7 +28,7 @@
 
 .js-projects-list-holder
   - if any_projects?(projects)
-    - load_pipeline_status(projects)
+    - load_pipeline_status(projects) if pipeline_status
     %ul.projects-list{ class: css_classes }
       - projects.each_with_index do |project, i|
         - css_class = (i >= projects_limit) || project.pending_delete? ? 'hide' : nil

changelogs/unreleased/sh-avoid-loading-pipeline-status.yml

+---
+title: Avoid loading pipeline status in search results
+merge_request: 30111
+author:
+type: performance

spec/controllers/search_controller_spec.rb

@@ -35,6 +35,19 @@ describe SearchController do
     end
   end
 
+  context 'global search' do
+    render_views
+
+    it 'omits pipeline status from load' do
+      project = create(:project, :public)
+      expect(Gitlab::Cache::Ci::ProjectPipelineStatus).not_to receive(:load_in_batch_for_projects)
+
+      get :show, params: { scope: 'projects', search: project.name }
+
+      expect(assigns[:search_objects].first).to eq project
+    end
+  end
+
   it 'finds issue comments' do
     project = create(:project, :public)
     note = create(:note_on_issue, project: project)