Use `simple=true` for projects API for better performance

app/assets/javascripts/projects_dropdown/service/projects_service.js

@@ -19,7 +19,7 @@ export default class ProjectsService {
 
   getSearchedProjects(searchQuery) {
     return this.projectsPath.get({
-      simple: false,
+      simple: true,
       per_page: 20,
       membership: !!gon.current_user_id,
       order_by: 'last_activity_at',

spec/javascripts/projects_dropdown/service/projects_service_spec.js

@@ -34,7 +34,7 @@ describe('ProjectsService', () => {
 
       const searchQuery = 'lab';
       const queryParams = {
-        simple: false,
+        simple: true,
         per_page: 20,
         membership: true,
         order_by: 'last_activity_at',