[jayhemnani9910]

Description

With the shipped config, array columns print as Python lists:

postgres> select id, tags from people order by id;
| 1  | ['a', 'b'] |
| 2  | []         |

format_output sets preprocessors to (format_numbers, format_arrays), then replaces the whole tuple with (align_decimals,) when no float format is set, which is the default (float = "" in pgclirc). That drops format_arrays. Setting float = "g" makes arrays show as {a,b}, so the formatter is there but skipped. It's now kept: (align_decimals, format_arrays).

Tested: new test_format_output_arrays_without_float_format fails without the change; full suite 2680 passed (2679 on main). In a pgcli session against PostgreSQL 17 with an empty pgclirc, the query above now shows {a,b} and {}.

\T csv output has the same Python lists and also writes <null> and space-padded numbers; that part is left alone here.

Checklist

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