title: Backoffice : Configure simple search widget to fetch records excluding subtype
body: <p>Hi I have created one custom item type and created another sub type as well which extends custom one. </p>
  
  <p>In Backoffice, I have added configuration for simple-search, but by default, widget gives result including subtype as well. </p>
  
  <p>I want simple-search to fetch only parent records (excluding subtype) when hitting search button. The idea is user can by-default search only parent records and if he wants he can check "include subtype" option in advanced-search.</p>
  
  <p>I have made changes in advanced-search to not include sub-type but not able to understand how to do it in simple-search.</p>