[flake8-comprehensions] Handled special case for C401 which also matches C416

[boolean-light]

Summary

Similar to #10419, there was a case where there is a collision of C401 and C416 (as discussed in #10101).
Fixed this by implementing short-circuit for the comprehension of the form {x for x in foo}.

Test Plan

Extended C401.py with the case where set is not builtin function, and divided the case where the short-circuit should occur.
Removed the last testcase of print(f"{ {set(a for a in 'abc')} }") test as this is invalid as a python code, but should I keep this?

[charliermarsh]

This is great, thank you for following up on it!

[github-actions]

ruff-ecosystem results

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