Improve detection of when to load guiref magic

IPython/qt/console/ipython_widget.py

@@ -280,8 +280,7 b' class IPythonWidget(FrontendWidget):'
         """Handle kernel info replies."""
         content = rep['content']
         if not self._guiref_loaded:
-            lang_info = content.get('language_info')
-            if lang_info.get('name') == 'python':
+            if content.get('implementation') == 'ipython':
                 self._load_guiref_magic()
             self._guiref_loaded = True