BUG: Fix NULL special case in object-to-any cast code - #19392
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Apparently `np.empty_like` is an easy way to create NULL filled object arrays. In general, it is not typical, which explains how this case could have managed to not be found by our tests or downstream tests. Closes numpygh-19373
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Backport of #19380.
Apparently
np.empty_likeis an easy way to create NULL filledobject arrays. In general, it is not typical, which explains
how this case could have managed to not be found by our tests
or downstream tests.
Closes gh-19373