Order stub overloads the way a type checker reads them #25

mypy takes the first matching @overload, so tools/gen_stubs.py must emit an overload set fewest parameters first, ties in table order (the order the binder's dispatcher tries them). Source: python-multiplatform docs/archive/pyi-generation-pythonic-stubs.md §3.6, relayed by the ecosystem lead. Done when a test pins the order and fails without the sort.