[issue44938] Expose PyErr_ChainExceptions in the stable API

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado <pablogsal at gmail.com>:


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keywords: +patch
pull_requests: +26267
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/27799

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44938>
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