Bug in lambda variable resolution

[fbx31]

Describe the bug

The first parameter of array_filter and array_transform seems to not be correctly resolved if it is a lamba variable, instead, receive Null.

To Reproduce

    use datafusion::logical_expr::{col, lit, lambda, lambda_var};
    use  datafusion::functions::expr_fn::*;
    use  datafusion::functions_nested::expr_fn::*;
    use datafusion::functions_aggregate::expr_fn::*;
    use futures::TryStreamExt;

    let mut df = dataframe!(
        "id" => vec![1, 2],
        "name" => vec!["Alice", "Bob"],
    )?;

    let expr1 = array_transform(
        col("grouped"),
        lambda(["x"],
        concat_ws(
            lit("+"), 
            vec![
                    get_field(lambda_var("x"), "name"),
                    get_field(lambda_var("x"), "l"),
                ]
            )
        )
    );
    let expr2 = array_transform(
        col("grouped"),
        lambda(["x"],
        concat_ws(
            lit("+"), 
            vec![
                    get_field(lambda_var("x"), "name"),
                    array_filter(
                        get_field(lambda_var("x"), "l"),
                        lambda(["y"], lambda_var("y").gt_eq(lit(1)))
                    ), 
                ]
            )
        )
    );

    df = df
        .with_column("l", make_array(vec![lit("0"), lit("1"), lit("2")]))?
        .aggregate(
                vec![lit("true")],
                vec![array_agg(named_struct(vec![lit("id"), col("id"), lit("name"), col("name"), lit("l"), col("l")])).alias("grouped")],
            )?
        .with_column("test", expr1)?
        // .with_column("test2", expr2)?
        ;

    let plan = df.into_unoptimized_plan().resolve_lambda_variables()?.data;
    let session =  datafusion::execution::context::SessionContext::new();
    let exec = session.state().create_physical_plan(&plan).await?;
    let context = session.task_ctx();
    let data: Vec<RecordBatch> = datafusion::physical_plan::execute_stream(exec, context)?.try_collect::<Vec<_>>().await?;
    let format = datafusion::config::FormatOptions { types_info:true, ..Default::default() };
    println!("{}", datafusion::arrow::util::pretty::pretty_format_batches_with_options(&data, &(&format).try_into()?)?);

With this code, if you uncomment the line .with_column("test2", expr2)? you will get following plan error:
Error: Plan("array_filter expected a list as first argument, got Null")

Perhaps I missed something...?

Thanks

Expected behavior

The expr2 should run normally and produce a column test2 similar but not same as comun 'test' in addition to the following schema

+--------------+------------------------------------------------------------------------+----------------------------------+
| Utf8("true") | grouped                                                                | test                             |
| Utf8         | List(Struct("id": Int32, "name": Utf8, "l": List(Utf8)))               | List(Utf8)                       |
+--------------+------------------------------------------------------------------------+----------------------------------+
| true         | [{id: 1, name: Alice, l: [0, 1, 2]}, {id: 2, name: Bob, l: [0, 1, 2]}] | [Alice+[0, 1, 2], Bob+[0, 1, 2]] |
+--------------+------------------------------------------------------------------------+----------------------------------+

Additional context

No response

[fbx31]

@gstvg Many thanks for the job done and all other contributors. As promised when the PR was issued, I am using and testing extensively the current functions and in the future will try to implement array_fold and array_sort_by (if not already done by someone else).
But for now, facing this (tricky) issue.