[Discover] Add check for the open perma link for cloud testing (#57884) (#57976)

- fixes a functional test failure in cloud

test/functional/page_objects/share_page.ts

@@ -76,6 +76,7 @@ export function SharePageProvider({ getService }: FtrProviderContext) {
     }
 
     async checkShortenUrl() {
+      await this.openPermaLinks();
       const shareForm = await testSubjects.find('shareUrlForm');
       await testSubjects.setCheckbox('useShortUrl', 'check');
       await shareForm.waitForDeletedByCssSelector('.euiLoadingSpinner');