[issue46388] Improve test coverage of functools.total_ordering

[Russel Webber]

Change by Russel Webber <russel at computer.org>:


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keywords: +patch
pull_requests: +28819
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/30616

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46388>
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