Fix profile black: missing split_on_trailing_comma=True

[janosh]

Came up in astral-sh/ruff#4153 (comment).

[johnthagen]

I think this is probably the right change to make, but I wanted to advocate that I personally find the current behavior optimal due to editors being able to automatically remove imports and not wanting to leave imports that might otherwise be able to be folded only a single line exploded and consuming vertical space. I personally see imports in a different class (mostly boilerplate) differently than what the black comma rule was more intended for.

But, at the same time I can see the argument to simply be consistent everywhere.

Thankfully the split-on-trailing-comma configuration still exists as an override.

• Change isort.split-on-trailing-comma default to false astral-sh/ruff#4153 (comment)

[janosh]

@johnthagen @timothycrosley Would be great to get a final merge/reject decision here.