`comparison-overlap` triggers for string enum members when the member name isn't the same as the comparison value

Bug Report, To Reproduce, and Actual Behaviour

If the enum member's name to compare isn't equal to the comparing value, a false positive comparison-overlap is triggered. See mypy Playground:

from enum import Enum

class A(str, Enum):  # Same behaviour if `class A(enum.StrEnum)`
    a = "b"

A.a == "a"  # OK
A.a == "b"  # E: Non-overlapping equality check (left operand type: "Literal[A.a]", right operand type: "Literal['b']")  [comparison-overlap]

Expected Behavior

No errors

Your Environment

• Mypy version used: 1.17, master
• Python version used: 3.12

Start with the linked mypy Playground reproduction using Python 3.12, strict equality, and the string enum whose member name differs from its value. Trace the comparison-overlap analysis for enum literals, then add or update a regression test so both comparisons produce no errors.