BUG: Array ufunc reduce out tuple #9111
Merged
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Backport of #9106.
This ensures that the normal reduce, accumulate and reduceat methods can deal with getting out as a single-item tuple, which is needed to work with array_ufunc (see #9105). It builds on #9104; can be done together or in sequence.
note: I think I'm right that with my refcounting (not doing anything), but someone who understands this better please check...
Should update to match #9106 as that gets commits pushed.