## Summary Part of [#111](https://github.com/astral-sh/ty/issues/111). After this change, dataclasses with two or more `KW_ONLY` field will be reported as invalid. The duplicate fields will simply be ignored when computing `__init__`'s signature. ## Test Plan Markdown tests.
Markdown files within the mdtest/ subdirectory are tests of type inference and type checking;
executed by the tests/mdtest.rs integration test.
See crates/ty_test/README.md for documentation of this test format.