Update typing_extensions imports in third-party stubs (#11245)

stubs/Markdown/markdown/core.pyi

@@ -1,6 +1,6 @@
 from collections.abc import Callable, Mapping, Sequence
-from typing import Any, ClassVar, Protocol
-from typing_extensions import Literal, Self
+from typing import Any, ClassVar, Literal, Protocol
+from typing_extensions import Self
 from xml.etree.ElementTree import Element
 
 from . import blockparser, inlinepatterns, postprocessors, preprocessors, treeprocessors

stubs/Markdown/markdown/extensions/toc.pyi

@@ -1,7 +1,6 @@
 from collections.abc import Iterator, MutableSet
 from re import Pattern
-from typing import Any
-from typing_extensions import TypedDict
+from typing import Any, TypedDict
 from xml.etree.ElementTree import Element
 
 from markdown.core import Markdown

stubs/Markdown/markdown/util.pyi

@@ -1,7 +1,6 @@
 from collections.abc import Iterator
 from re import Pattern
-from typing import Any, Generic, TypeVar, overload
-from typing_extensions import TypedDict
+from typing import Any, Generic, TypedDict, TypeVar, overload
 
 from markdown.core import Markdown