Merge branch 'bugfix/use-correct-condition-for-sorting' into 'develop'

[BUGFIX] Use new condition to handle sorting in search

See merge request t3o/ter!582

extensions/ter_fe2/Configuration/TypoScript/Default/Plugins/Solr.typoscript

@@ -33,8 +33,6 @@ plugin {
   }
 }
 
-[globalVar = GP:tx_solr|q =]
-
-[else]
+[traverse(request.getQueryParams(), 'tx_solr/q') !== '']
 plugin.tx_solr.search.query.sortBy =
 [global]