[stdlib] Add missing Final (#14613)

stdlib/concurrent/futures/_base.pyi

@@ -15,8 +15,7 @@ RUNNING: Final = "RUNNING"
 CANCELLED: Final = "CANCELLED"
 CANCELLED_AND_NOTIFIED: Final = "CANCELLED_AND_NOTIFIED"
 FINISHED: Final = "FINISHED"
-_FUTURE_STATES: list[str]
-_STATE_TO_DESCRIPTION_MAP: dict[str, str]
+_STATE_TO_DESCRIPTION_MAP: Final[dict[str, str]]
 LOGGER: Logger
 
 class Error(Exception): ...

stdlib/concurrent/futures/process.pyi

@@ -5,7 +5,7 @@ from multiprocessing.context import BaseContext, Process
 from multiprocessing.queues import Queue, SimpleQueue
 from threading import Lock, Semaphore, Thread
 from types import TracebackType
-from typing import Any, Generic, TypeVar, overload
+from typing import Any, Final, Generic, TypeVar, overload
 from typing_extensions import TypeVarTuple, Unpack
 from weakref import ref
 
@@ -28,9 +28,9 @@ class _ThreadWakeup:
 
 def _python_exit() -> None: ...
 
-EXTRA_QUEUED_CALLS: int
+EXTRA_QUEUED_CALLS: Final = 1
 
-_MAX_WINDOWS_WORKERS: int
+_MAX_WINDOWS_WORKERS: Final = 61
 
 class _RemoteTraceback(Exception):
     tb: str