[issue42317] Docs of `typing.get_args`: Mention that due to caching of typing generics the order of arguments for Unions can be different from the one of the returned tuple

[miss-islington]

Change by miss-islington <mariatta.wijaya+miss-islington at gmail.com>:


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pull_requests: +22199
pull_request: https://github.com/python/cpython/pull/23307

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<https://bugs.python.org/issue42317>
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