From 41365f7dc49b758717e28a5112affe14eac93775 Mon Sep 17 00:00:00 2001
From: Ethan Furman <ethan@stoneleaf.us>
Date: Wed, 17 Nov 2021 23:36:01 -0800
Subject: [PATCH] [3.9] [Enum] update member.member removal to 3.11 (GH-29607)

Accessing one enum member from another originally raised an `AttributeError`, but became possible due to a performance boost implementation detail.  In 3.11 it will again raise an `AttributeError`.
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2.47.3