49c25993eb
## Summary I noticed we were inferring `Todo` as the declared type for annotations such as `x: tuple[list[int], list[int]]`. This PR reworks our annotation parsing so that we instead infer `tuple[Todo, Todo]` for this annotation, which is quite a bit more precise. ## Test Plan Existing mdtest updated.
Markdown files within the mdtest/ subdirectory are tests of type inference and type checking;
executed by the tests/mdtest.rs integration test.
See crates/red_knot_test/README.md for documentation of this test format.