Turn on "search expander" option for bento EDS searches so results are more consistent with classic search

Have not done an exhaustive survey yet but it appears — at least for institutions using new EDS — that searches on native EDS automatically also include results for synonyms. E.g., a search for kittens will also include results for cat. Since bento does not do this, the result counts can sometimes be dramatically different.

I believe there is an option in the EDS API to turn this feature on.