Disable test_fcntl_open on MacOS

It was disabled on Windows in emscripten-core#23241 but fails on MacOS too.

Author: dschuff

test/test_core.py

@@ -19,7 +19,7 @@
 
 from tools.shared import PIPE
 from tools.shared import EMCC, EMAR, FILE_PACKAGER
-from tools.utils import WINDOWS, MACOS, write_file, delete_file
+from tools.utils import WINDOWS, MACOS, LINUX, write_file, delete_file
 from tools import shared, building, config, utils, webassembly
 import common
 from common import RunnerCore, path_from_root, requires_native_clang, test_file, create_file
@@ -5546,7 +5546,7 @@ def test_fcntl(self):
   @also_with_nodefs_both
   @crossplatform
   def test_fcntl_open(self):
-    if '-DNODERAWFS' in self.emcc_args and WINDOWS:
+    if '-DNODERAWFS' in self.emcc_args and not LINUX:
       self.skipTest('currently failing under windows and noderawfs')
     self.do_run_in_out_file_test('fcntl/test_fcntl_open.c')