fix: broken tests due to str(enum) changes in Python 3.11

[irataxy]

Description

There was a breaking change in python 3.11. See

• Python 3.11.0b4 str(enum) giving integer value and not name python/cpython#94763
• Enum with str or int Mixin Breaking Change in Python 3.11 python/cpython#100458
• https://docs.python.org/3/whatsnew/3.11.html#enum

Changed Enum.__format__() (the default for format(), str.format() and f-strings) to always produce the same result as Enum.__str__(): for enums inheriting from ReprEnum it will be the member’s value; for all other enums it will be the enum and member name (e.g. Color.RED)

Fixes #10241

Checklist

• Please merge this PR for me once it is approved