Add @disjoint_base decorator in the stdlib (#14599)

And fix some other new stubtest finds.

stdlib/_socket.pyi

@@ -3,7 +3,7 @@ from _typeshed import ReadableBuffer, WriteableBuffer
 from collections.abc import Iterable
 from socket import error as error, gaierror as gaierror, herror as herror, timeout as timeout
 from typing import Any, Final, SupportsIndex, overload
-from typing_extensions import CapsuleType, TypeAlias
+from typing_extensions import CapsuleType, TypeAlias, disjoint_base
 
 _CMSG: TypeAlias = tuple[int, int, bytes]
 _CMSGArg: TypeAlias = tuple[int, int, ReadableBuffer]
@@ -731,6 +731,7 @@ if sys.platform != "win32" and sys.platform != "darwin":
 
 # ===== Classes =====
 
+@disjoint_base
 class socket:
     @property
     def family(self) -> int: ...