i18n: Update Arabic translation (#20202)

src/locale/lang/ar.js

@@ -112,8 +112,8 @@ export default {
       title: 'عودة'
     },
     popconfirm: {
-      confirmButtonText: 'Yes', // to be translated
-      cancelButtonText: 'No' // to be translated
+      confirmButtonText: 'تأكيد',
+      cancelButtonText: 'إلغاء'
     }
   }
 };