write_csv fails to write arrays correctly

[cpwright]

Description

If you have a table with a Java array column, then the write_csv call dumps out a toString representation.

Steps to reproduce

x=empty_table(10).update("Y=new String[0]")
write_csv(x, "/tmp/z.csv")

Expected results

A file containing "[]".

Actual results

[charleswright@charleswright-verm17d ~]$ cat /tmp/z.csv
Y
[Ljava.lang.String;@5897009e
[Ljava.lang.String;@71cbb466
[Ljava.lang.String;@57851ad6
....

Versions

• Deephaven: 0.25.2

[rcaudy]

I'm not sure there's a standard way to emit arrays in CSV files. Certainly raw toString() isn't ideal, however. Putting this on the backlog for now, until we do a project to improve CSV writing.