use the last provisional value of cycle_fn

Author: mtshiba

crates/ty_python_semantic/resources/mdtest/cycle.md

@@ -51,8 +51,6 @@ from typing import Generic, TypeVar
 
 B = TypeVar("B", bound="Base")
 
-# TODO: no error
-# error: [invalid-argument-type] "`typing.TypeVar | typing.TypeVar` is not a valid argument to `Generic`"
 class Base(Generic[B]):
     pass
 ```

crates/ty_python_semantic/resources/mdtest/pep695_type_aliases.md

@@ -327,7 +327,7 @@ class C(P[T]):
     pass
 
 reveal_type(C[int]())  # revealed: C[int]
-reveal_type(C())  # revealed: C[Divergent]
+reveal_type(C())  # revealed: C[C[Divergent]]
 ```
 
 ### Union inside generic