[issue44653] Parameter substitution in the union type does not work with typing.Union

[Yurii Karabas]

Change by Yurii Karabas <1998uriyyo at gmail.com>:


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keywords: +patch
nosy: +uriyyo
nosy_count: 3.0 -> 4.0
pull_requests: +25745
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/26980

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44653>
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