fix e2e test 18x aria on <ul> html tag

(cherry picked from commit e6389a7)

Author: frabacche

src/app/item-page/edit-item-page/edit-item-page.component.html

@@ -3,7 +3,7 @@
         <div class="col-12">
             <h1 class="border-bottom">{{'item.edit.head' | translate}}</h1>
             <div class="pt-2">
-                <ul class="nav nav-tabs justify-content-start" role="tablist">
+              <ul *ngIf="pages.length > 0" class="nav nav-tabs justify-content-start" role="tablist">
                     <li *ngFor="let page of pages" class="nav-item" role="presentation">
                         <a *ngIf="(page.enabled | async)"
                            [attr.aria-selected]="page.page === currentPage"