3.x: Mypy Unreachable #2879
Description
The unreachable check was disabled in #2878 after https://github.com/marshmallow-code/marshmallow/actions/runs/20423614307/job/58679701675 blocked the pypi 3.36.2 security release.
src/marshmallow/fields.py:627: error: Statement is unreachable [unreachable]