Fix: don't set default value for unused socket in geometry nodes

Setting the default value resulted in an incorrect tooltip.

Differential Revision: https://developer.blender.org/D16957

source/blender/nodes/geometry/nodes/node_geo_attribute_capture.cc

@@ -147,7 +147,6 @@ static void node_geo_exec(GeoNodeExecParams params)
 
   if (!attribute_id) {
     params.set_output("Geometry", geometry_set);
-    params.set_default_remaining_outputs();
     return;
   }