make stat.FILE_ATTRIBUTE_* available on all platforms

stdlib/@tests/stubtest_allowlists/darwin.txt

@@ -45,9 +45,6 @@ multiprocessing.popen_spawn_win32  # exists on Darwin but fails to import
 readline.append_history_file  # Only available if compiled with GNU readline, not editline
 select.poll  # Actually a function; we have a class so it can be used as a type
 
-# Some of these exist on non-windows, but they are useless and this is not intended
-stat.FILE_ATTRIBUTE_[A-Z_]+
-
 tkinter.Tk.createfilehandler  # Methods that come from __getattr__() at runtime
 tkinter.Tk.deletefilehandler  # Methods that come from __getattr__() at runtime
 

stdlib/@tests/stubtest_allowlists/linux.txt

@@ -54,9 +54,6 @@ _?socket.SOL_IPX
 _?socket.SOL_NETROM
 _?socket.SOL_ROSE
 
-# Some of these exist on non-windows, but they are useless and this is not intended
-stat.FILE_ATTRIBUTE_[A-Z_]+
-
 # This is available on Linux, but it's documented as for kernel debugging and
 # not present on GitHub Actions runners.
 termios.TIOCTTYGSTRUCT

stdlib/stat.pyi

@@ -2,6 +2,28 @@ import sys
 from _stat import *
 from typing import Final
 
+# _stat.c defines FILE_ATTRIBUTE_* constants conditionally,
+# making them available only at runtime on Windows.
+# stat.py unconditionally redefines the same FILE_ATTRIBUTE_* constants
+# on all platforms.
+FILE_ATTRIBUTE_ARCHIVE: Final = 32  # type: ignore[misc]
+FILE_ATTRIBUTE_COMPRESSED: Final = 2048  # type: ignore[misc]
+FILE_ATTRIBUTE_DEVICE: Final = 64  # type: ignore[misc]
+FILE_ATTRIBUTE_DIRECTORY: Final = 16  # type: ignore[misc]
+FILE_ATTRIBUTE_ENCRYPTED: Final = 16384  # type: ignore[misc]
+FILE_ATTRIBUTE_HIDDEN: Final = 2  # type: ignore[misc]
+FILE_ATTRIBUTE_INTEGRITY_STREAM: Final = 32768  # type: ignore[misc]
+FILE_ATTRIBUTE_NORMAL: Final = 128  # type: ignore[misc]
+FILE_ATTRIBUTE_NOT_CONTENT_INDEXED: Final = 8192  # type: ignore[misc]
+FILE_ATTRIBUTE_NO_SCRUB_DATA: Final = 131072  # type: ignore[misc]
+FILE_ATTRIBUTE_OFFLINE: Final = 4096  # type: ignore[misc]
+FILE_ATTRIBUTE_READONLY: Final = 1  # type: ignore[misc]
+FILE_ATTRIBUTE_REPARSE_POINT: Final = 1024  # type: ignore[misc]
+FILE_ATTRIBUTE_SPARSE_FILE: Final = 512  # type: ignore[misc]
+FILE_ATTRIBUTE_SYSTEM: Final = 4  # type: ignore[misc]
+FILE_ATTRIBUTE_TEMPORARY: Final = 256  # type: ignore[misc]
+FILE_ATTRIBUTE_VIRTUAL: Final = 65536  # type: ignore[misc]
+
 if sys.version_info >= (3, 13):
     # https://github.com/python/cpython/issues/114081#issuecomment-2119017790
     SF_RESTRICTED: Final = 0x00080000