test: http-client-timeout error assert arguments

PR-URL: nodejs#24130
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>

test/parallel/test-http-client-timeout-on-connect.js

@@ -24,7 +24,7 @@ server.listen(0, common.localhostIPv4, common.mustCall(() => {
   }));
   req.on('timeout', common.mustCall(() => req.abort()));
   req.on('error', common.mustCall((err) => {
-    assert.strictEqual('socket hang up', err.message);
+    assert.strictEqual(err.message, 'socket hang up');
     server.close();
   }));
 }));