[docs] [issue35461] Document C API functions which swallow exceptions

[Serhiy Storchaka]

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


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keywords: +patch
pull_requests: +10349
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35461>
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