fallback to native traceback when handling ExceptionGroup (take 2) [SQUASH]#10209

Merged

Zac-HD merged 7 commits intopytest-dev:mainfrom

jakkdl:exception_group_fallback

Aug 17, 2022

Commits on Aug 12, 2022

Squashed commit of the following:
jakkdl
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Typed ExceptionGroupTypes and changed to BaseExceptionGroup, fixed exceptionchain (excinfo->excinfo_, set reprcrash. Extended tests, though they're wip.
jakkdl
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Commits on Aug 13, 2022

added exceptiongroup to pre-commit-config, moved away from tuple to directly defining BaseExceptionGroup, added block comment, added match line for inner exception, changked mark.skipif to importor…
jakkdl
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Commits on Aug 16, 2022

Commits on Aug 17, 2022

removed from CI, added comments to tox and pre-commit
jakkdl
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