test: fix timing issue in `utilityProcess` test fixtures (#45964)

* fix: potential timing issue in utilityProcess test

* fix: potential timing issue in utilityProcess esm test

spec/fixtures/api/utility-process/dns-result-order.js

@@ -1,4 +1,6 @@
 const dns = require('node:dns');
 
-console.log(dns.getDefaultResultOrder());
-process.exit(0);
+const write = (writable, chunk) => new Promise((resolve) => writable.write(chunk, resolve));
+
+write(process.stdout, `${dns.getDefaultResultOrder()}\n`)
+  .then(() => process.exit(0));

spec/fixtures/api/utility-process/esm.mjs

@@ -1,2 +1,4 @@
-console.log(import.meta.url);
-process.exit(0);
+const write = (writable, chunk) => new Promise((resolve) => writable.write(chunk, resolve));
+
+write(process.stdout, `${import.meta.url}\n`)
+  .then(() => process.exit(0));