update tests

Author: ibraheemdev

crates/ty_python_semantic/resources/mdtest/typed_dict.md

@@ -125,9 +125,10 @@ def homogeneous_list[T](*args: T) -> list[T]:
 reveal_type(homogeneous_list(1, 2, 3))  # revealed: list[Literal[1, 2, 3]]
 plot2: Plot = {"y": homogeneous_list(1, 2, 3), "x": None}
 reveal_type(plot2["y"])  # revealed: list[int]
-# TODO: no error
-# error: [invalid-argument-type]
+
 plot3: Plot = {"y": homogeneous_list(1, 2, 3), "x": homogeneous_list(1, 2, 3)}
+reveal_type(plot3["y"])  # revealed: list[int]
+reveal_type(plot3["x"])  # revealed: list[int] | None
 
 Y = "y"
 X = "x"