returning id of row as additional return value in _on_cell_value_changed

[vineetbansal]

Thanks for the great plugin!

In my use case (and also seemingly for others as per issue #25), I need the row identifier to be made available to me for proper updates, not merely the visible row index. I believe this little change makes it available as an (additional) 4th return value for on_cell_value_changed, without breaking any old code.

Typical usage:

class GridState(rx.State):
    @rx.event
    def cell_value_changed(self, row_index, col_field, new_value, row_id):
        yield rx.toast(
            f"Cell value changed, Row ID: {row_id}, Column: {col_field}, New Value: {new_value}",
        )

...
@rx.page(route="/grid")
def grid() -> rx.Component:
    return ag_grid(
        ...
        row_id_key="id",
        on_cell_value_changed=GridState.cell_value_changed,