[3.10] bpo-44654: Do not export the union type related symbols (GH-27223).#27225

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serhiy-storchaka merged 1 commit intopython:3.10from

serhiy-storchaka:backport-8f50f44-3.10

Jul 18, 2021

Commits on Jul 18, 2021

[3.10] bpo-44654: Do not export the union type related symbols (GH-27223).
serhiy-storchaka
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