Re-export SYSPROTO_CONTROL and PF_SYSTEM in socket on macos (#10814)

stdlib/socket.pyi

@@ -129,7 +129,9 @@ if sys.platform != "darwin" or sys.version_info >= (3, 9):
         IPV6_RTHDR as IPV6_RTHDR,
     )
 
-if sys.platform != "darwin":
+if sys.platform == "darwin":
+    from _socket import PF_SYSTEM as PF_SYSTEM, SYSPROTO_CONTROL as SYSPROTO_CONTROL
+else:
     from _socket import SO_EXCLUSIVEADDRUSE as SO_EXCLUSIVEADDRUSE
 
 if sys.version_info >= (3, 10):

tests/stubtest_allowlists/darwin.txt

@@ -31,8 +31,6 @@ select.POLLMSG   # system dependent
 # Exists at runtime, but missing from stubs
 mimetypes.MimeTypes.read_windows_registry
 selectors.DefaultSelector.fileno
-socket.PF_SYSTEM
-socket.SYSPROTO_CONTROL
 
 _ctypes.dlclose
 _ctypes.dlopen