[issue46721] Optimize set.issuperset() for non-set argument

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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dependencies: +Use-after-free by mutating set during set operations

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46721>
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