Properly type SimpleCookie.

This definition makes it usable even in pyright's strict mode.
See microsoft/pyright#5927 for details.

Author: apollo13

django-stubs/http/cookie.pyi

@@ -1,5 +1,8 @@
+from http import cookies
 from typing import Any
 
-SimpleCookie: Any
+from typing_extensions import TypeAlias
+
+SimpleCookie: TypeAlias = cookies.SimpleCookie[Any]
 
 def parse_cookie(cookie: str) -> dict[str, str]: ...