web_renderjs_ui_test: adjust testPrintActions

Since 05210e87 (erp5_web_renderjs_ui: add LabelField support,
2020-05-26) we have label field support, so this labelfield is no longer
rendered with the fallback "read only field" gadget and markup is
different. Update selector to make the test happy.

bt5/erp5_web_renderjs_ui_test/PathTemplateItem/portal_tests/renderjs_ui_page_templates_zuite/testPrintActions.zpt

@@ -47,7 +47,7 @@
 </tal:block>
 
 <tr><td>waitForText</td>
-    <td>//p[@id='field_last_form_id']</td>
+    <td>//div[@data-gadget-scope='field_last_form_id']//div[@data-gadget-scope='field']</td>
     <td>Foo_viewRelationField</td></tr>
 </tbody></table>
 </body>