[`flake8-comprehensions`] Skip iterables with named expressions in `unnecessary-map` (`C417`) (#14827)
This PR modifies [unnecessary-map
(C417)](https://docs.astral.sh/ruff/rules/unnecessary-map/#unnecessary-map-c417)
to skip `map` expressions if the iterable contains a named expression,
since those cannot appear in comprehensions.
Closes #14808