Properly set search string in Global Search

[nikhiltri]

Description

The cmsSearch() method in ModuleController uses the FreeTextSearch model and sets:

        $searchFilter->queryString($search);
        $searchFilter->searchColumns($fields);
        $searchFilter->searchQuery($query);

The FreeTextSearch model, however, has a condition that requires searchString to not be empty, and that value is never set in cmsSearch(). It gets set by the searchFor() method which never gets called.

Adding:

        $searchFilter->searchFor($search);

Makes global search work as expected for me.

Related Issues

Fixes #2762