[_winapi] Add COPY_FILE_DIRECTORY (#14515)

Author: donBarbos

stdlib/@tests/stubtest_allowlists/win32-py314.txt

@@ -2,7 +2,6 @@
 # TODO: New errors in Python 3.14 that need to be fixed or moved below
 # ====================================================================
 
-_winapi.COPY_FILE_DIRECTORY
 compression.zlib.ZLIBNG_VERSION
 pathlib.Path.group
 pathlib.Path.owner

stdlib/_winapi.pyi

@@ -172,6 +172,9 @@ if sys.platform == "win32":
         ERROR_ACCESS_DENIED: Final = 5
         ERROR_PRIVILEGE_NOT_HELD: Final = 1314
 
+    if sys.version_info >= (3, 14):
+        COPY_FILE_DIRECTORY: Final = 0x00000080
+
     def CloseHandle(handle: int, /) -> None: ...
     @overload
     def ConnectNamedPipe(handle: int, overlapped: Literal[True]) -> Overlapped: ...