'NoneType' object is not callable error in Blender 4.1.1

Getting the below error when trying to run the sample code in Blender 4.1.1

```
from geometry_script import *

@tree("Repeat Grid")
def repeat_grid(geometry: Geometry, width: Int, height: Int):
g = grid(
size_x=width, size_y=height,
vertices_x=width, vertices_y=height
).mesh_to_points()
return g.instance_on_points(instance=geometry)
```

```
Python: Traceback (most recent call last):
File "/Text", line 3, in
File "/Users/eugene/Library/Application Support/Blender/4.1/scripts/addons/geometry-script-main/api/tree.py", line 136, in build_tree
outputs = builder(**builder_inputs)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Text", line 8, in repeat_grid
TypeError: 'NoneType' object is not callable
```