[issue46477] Enum: ensure bitwise operators on subclasses are correct

[Ethan Furman]

Change by Ethan Furman <ethan at stoneleaf.us>:


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keywords: +patch
pull_requests: +29003
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/30816

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46477>
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