Describe the bug

This is causing troubles for one of our user-defined aggregation functions. I don't know if there's an easier way to reproduce the issue. But it looks to me like it should be straightforward to support those data types:

• Duration is a primitive
• Union is similar to Struct and List - a single element array

To Reproduce

I am not sure. I could post some code with the UDAF reproduction but maybe someone knows a way to trigger the issue directly with a query?

Edit - failing query:

SELECT tag, array_agg(millis - arrow_cast(secs, 'Timestamp(Millisecond, None)')) FROM t GROUP BY tag ORDER BY tag;

Expected behavior

ScalarValue::iter_to_array to support all data types (maybe except the views) but I would settle for those two.

Additional context

I'm preparing a PR but I need ideas for testing