Use typing_extensions.Self instead of _typeshed.Self (#9702)

stubs/Pillow/PIL/Image.pyi

@@ -1,9 +1,9 @@
-from _typeshed import Incomplete, Self, SupportsRead, SupportsWrite
+from _typeshed import Incomplete, SupportsRead, SupportsWrite
 from collections.abc import Callable, Iterable, Iterator, MutableMapping, Sequence
 from enum import IntEnum
 from pathlib import Path
 from typing import Any, ClassVar, Protocol, SupportsBytes
-from typing_extensions import Literal, TypeAlias
+from typing_extensions import Literal, Self, TypeAlias
 
 from PIL.PyAccess import PyAccess
 
@@ -171,7 +171,7 @@ class Image:
     def height(self) -> int: ...
     @property
     def size(self) -> tuple[int, int]: ...
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def __exit__(self, *args: object) -> None: ...
     def close(self) -> None: ...
     def __eq__(self, other: object) -> bool: ...

stubs/Pillow/PIL/ImageFile.pyi

@@ -1,5 +1,6 @@
-from _typeshed import Incomplete, Self
+from _typeshed import Incomplete
 from typing import Any, NoReturn
+from typing_extensions import Self
 
 from .Image import Image
 
@@ -40,7 +41,7 @@ class Parser:
     def reset(self) -> None: ...
     decode: Any
     def feed(self, data) -> None: ...
-    def __enter__(self: Self) -> Self: ...
+    def __enter__(self) -> Self: ...
     def __exit__(self, *args: object) -> None: ...
     def close(self) -> Image: ...
 

stubs/Pillow/PIL/ImageFilter.pyi

@@ -1,7 +1,7 @@
-from _typeshed import Incomplete, Self
+from _typeshed import Incomplete
 from collections.abc import Callable, Iterable, Sequence
 from typing import Any
-from typing_extensions import Literal, TypeAlias
+from typing_extensions import Literal, Self, TypeAlias
 
 from .Image import Image
 
@@ -122,14 +122,14 @@ class Color3DLUT(MultibandFilter):
     ) -> None: ...
     @classmethod
     def generate(
-        cls: type[Self],
+        cls,
         size: int | tuple[int, int, int],
         callback: Callable[[float, float, float], Iterable[float]],
         channels: int = ...,
         target_mode: str | None = ...,
     ) -> Self: ...
     def transform(
-        self: Self,
+        self,
         callback: Callable[..., Iterable[float]],
         with_normals: bool = ...,
         channels: Literal[3, 4] | None = ...,