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## Summary A callable type is disjoint from other literal types. For example, `Type::StringLiteral` must be an instance of exactly `str`, not a subclass of `str`, and `str` is not callable. The same applies to other literal types. This should hopefully fix #17144, I couldn't produce any failures after running property tests multiple times. ## Test Plan Add test cases for disjointness check between callable and other literal types. Run property tests multiple times.