Merge pull request #2256 from KhronosGroup/fix_gn_data_type

Fix geometry node instance data type check

addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py

@@ -206,7 +206,7 @@ def __gather_extensions(vnode, export_settings):
         return None
 
     if export_settings["gltf_lights"] and vnode.blender_type == VExportNode.INSTANCE and vnode.data is not None:
-        if vnode.data.type in LIGHTS:
+        if vnode.data.id_type in LIGHTS:
             blender_lamp = vnode.data
     elif export_settings["gltf_lights"] and blender_object is not None and (blender_object.type == "LAMP" or blender_object.type == "LIGHT"):
         blender_lamp = blender_object.data