Fix TypeVar argument annotations (#6943)

Arguments like bound= accept type forms like unions, which are not themselves types.

stdlib/typing.pyi

@@ -15,17 +15,12 @@ Any = object()
 
 class TypeVar:
     __name__: str
-    __bound__: Type[Any] | None
-    __constraints__: Tuple[Type[Any], ...]
+    __bound__: Any | None
+    __constraints__: Tuple[Any, ...]
     __covariant__: bool
     __contravariant__: bool
     def __init__(
-        self,
-        name: str,
-        *constraints: Type[Any],
-        bound: None | Type[Any] | str = ...,
-        covariant: bool = ...,
-        contravariant: bool = ...,
+        self, name: str, *constraints: Any, bound: Any | None = ..., covariant: bool = ..., contravariant: bool = ...
     ) -> None: ...
     if sys.version_info >= (3, 10):
         def __or__(self, other: Any) -> _SpecialForm: ...
@@ -75,12 +70,10 @@ if sys.version_info >= (3, 10):
         def __init__(self, origin: ParamSpec) -> None: ...
     class ParamSpec:
         __name__: str
-        __bound__: Type[Any] | None
+        __bound__: Any | None
         __covariant__: bool
         __contravariant__: bool
-        def __init__(
-            self, name: str, *, bound: None | Type[Any] | str = ..., contravariant: bool = ..., covariant: bool = ...
-        ) -> None: ...
+        def __init__(self, name: str, *, bound: Any | None = ..., contravariant: bool = ..., covariant: bool = ...) -> None: ...
         @property
         def args(self) -> ParamSpecArgs: ...
         @property