[Bug, EC] PEES-773: Fix Grid Export not respecting the "Type to show" (#1040)

Author: kingjia90

public/js/pimcore/element/helpers/gridColumnConfig.js

@@ -954,6 +954,10 @@ pimcore.element.helpers.gridColumnConfig = {
             params["only_direct_children"] = this.checkboxOnlyDirectChildren.getValue();
         }
 
+        if (typeof this.selectObjectType !=='undefined') {
+            params['filter_by_object_type'] = this.selectObjectType.getValue();
+        }
+        
         //only unreferenced filter
         if (this.checkboxOnlyUnreferenced) {
             params["only_unreferenced"] = this.checkboxOnlyUnreferenced.getValue();