[stdlib] Make http.cookies.Morsel inherit a TypedDict

stdlib/http/cookies.pyi

@@ -1,6 +1,7 @@
+import sys
 from collections.abc import Iterable, Mapping
 from types import GenericAlias
-from typing import Any, Generic, TypeVar, overload
+from typing import Any, Generic, TypedDict, TypeVar, overload, type_check_only
 from typing_extensions import TypeAlias
 
 __all__ = ["CookieError", "BaseCookie", "SimpleCookie"]
@@ -19,23 +20,50 @@
 
 class CookieError(Exception): ...
 
-class Morsel(dict[str, Any], Generic[_T]):
+if sys.version_info >= (3, 14):
+    @type_check_only
+    class _MorselDictType(TypedDict):
+        expires: Any
+        path: Any
+        comment: Any
+        domain: Any
+        max_age: Any
+        secure: Any
+        httponly: Any
+        version: Any
+        samesite: Any
+        partitioned: Any  # New in version 3.14.
+
+else:
+    @type_check_only
+    class _MorselDictType(TypedDict):
+        expires: Any
+        path: Any
+        comment: Any
+        domain: Any
+        max_age: Any
+        secure: Any
+        httponly: Any
+        version: Any
+        samesite: Any
+
+class Morsel(_MorselDictType, Generic[_T]):
     @property
     def value(self) -> str: ...
     @property
     def coded_value(self) -> _T: ...
     @property
     def key(self) -> str: ...
     def __init__(self) -> None: ...
     def set(self, key: str, val: str, coded_val: _T) -> None: ...
     def setdefault(self, key: str, val: str | None = None) -> str: ...
     # The dict update can also get a keywords argument so this is incompatible
     @overload  # type: ignore[override]
     def update(self, values: Mapping[str, str]) -> None: ...
     @overload
     def update(self, values: Iterable[tuple[str, str]]) -> None: ...
     def isReservedKey(self, K: str) -> bool: ...
     def output(self, attrs: list[str] | None = None, header: str = "Set-Cookie:") -> str: ...
     __str__ = output
     def js_output(self, attrs: list[str] | None = None) -> str: ...
     def OutputString(self, attrs: list[str] | None = None) -> str: ...