Unpack results may not work

[mgdenno]

I might be using this wrong, but it looks to me like unpack_results does not work. This no worko.

# Define a bootstrapper with custom parameters.
boot = bs.Gumboot(
    reps=500,
    quantiles=[0.05, 0.5, 0.95],
    unpack_results=True
)

metrics_sdf = ev.metrics.query(
    group_by=[
        "primary_location_id",
        "configuration_name"
    ],
    include_metrics=[
        dm.RelativeBias(bootstrap=boot)
    ]
).to_sdf()

[mgdenno]

Running unpack_sdf_dict_columns(metrics_sdf, "relative_bias").toPandas() works. Seems like maybe the unpack_func is not set anywhere (just from a quick search of the code base). We appear ot have a test for this though...

[samland1116]

closed with #589