fix card.template() in card layout screen

https://forums.ankiweb.net/t/card-template-does-not-work-when-called-in-card-will-show-hook-in-template-editor/2798

qt/aqt/clayout.py

@@ -529,6 +529,7 @@ class CardLayout(QDialog):
             fill_empty=self.fill_empty_action_toggled,
         ).render()
         card.set_render_output(output)
+        card._note = self.note
         return card
 
     # Card operations