test: fix fs benchmark test

Add missing option "mode". Alphabetize options for easier maintenance.

PR-URL: nodejs#29967
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>

test/benchmark/test-benchmark-fs.js

@@ -7,16 +7,17 @@ const tmpdir = require('../common/tmpdir');
 tmpdir.refresh();
 
 runBenchmark('fs', [
-  'n=1',
-  'size=1',
+  'concurrent=1',
+  'dir=.github',
   'dur=0.1',
+  'encodingType=buf',
+  'filesize=1024',
   'len=1024',
-  'concurrent=1',
+  'mode=callback',
+  'n=1',
   'pathType=relative',
-  'statType=fstat',
+  'size=1',
   'statSyncType=fstatSync',
-  'encodingType=buf',
-  'filesize=1024',
-  'dir=.github',
-  'withFileTypes=false'
+  'statType=fstat',
+  'withFileTypes=false',
 ], { NODEJS_BENCHMARK_ZERO_ALLOWED: 1 });