Some validation functions use luceneapi_module_list() as opposed to luceneapi_searchable_module_list()

Some validation functions have code to test if the module that executed a search is a Search Lucene API module. Since some modules manage a Lucene index but do not provide a search interface (i.e. Search Lucene DidYouMean) luceneapi_searchable_module_list() should be used in favor or luceneapi_module_list().