Implement some constraints tests for typevar tuples.
This implements some constraint tests for type var tuples. We only test SUPERTYPE_OF right now because the SUBTYPE_OF path doesn't actually seem to work yet. We also have to make TypeList support hash and eq in order to compare the sets.
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉