Fix E2E navigation with Ariane

alfa-client/apps/admin-e2e/src/e2e/main-tests/navigation/ariane.cy.ts

@@ -20,8 +20,8 @@ describe('Navigation', () => {
       exist(mainPage.getPostfachNavigationItem());
     });
 
-    it('should hide organisationseinheiten navigation item', () => {
-      notExist(mainPage.getOrganisationEinheitNavigationItem());
+    it('should show organisationseinheiten navigation item', () => {
+      exist(mainPage.getOrganisationEinheitNavigationItem());
     });
 
     it('should hide statistik navigation item', () => {