Fix sockets.test_nodejs_sockets_echo_connect_failure (#25332)

On 3/4 of my systems (Windows, Linux and a macOS), I get `"Host is
unreachable"`. On 1/4 of my systems, (Windows 10), I get a `"Connection
refused"`.

Author: juj

test/test_sockets.py

@@ -337,7 +337,7 @@ def test_nodejs_sockets_echo(self, harness_class, port, args):
       self.do_runf('sockets/test_sockets_echo_client.c', expected, cflags=['-DSOCKK=%d' % harness.listen_port] + args)
 
   def test_nodejs_sockets_connect_failure(self):
-    self.do_runf('sockets/test_sockets_echo_client.c', 'connect failed: Connection refused', cflags=['-DSOCKK=666'], assert_returncode=NON_ZERO)
+    self.do_runf('sockets/test_sockets_echo_client.c', r'connect failed: (Connection refused|Host is unreachable)', regex=True, cflags=['-DSOCKK=666'], assert_returncode=NON_ZERO)
 
   @requires_native_clang
   @requires_python_dev_packages