Updated cancel button behavior for account pages

no issue

- By default, Cancel button on Account plan/profile pages goes back to last open page like accountHome
- In case the page is opened directly via custom trigger button, there is no last open page so the popup didn't close
- Closes popup for back actions in case no last page is found

ghost/portal/src/actions.js

@@ -23,6 +23,8 @@ function back({state}) {
         return {
             page: state.lastPage
         };
+    } else {
+        closePopup({state});
     }
 }