test: increase coverage for fs/dir read

test invalid callback case for fs/dir read

Refs: https://coverage.nodejs.org/coverage-f7dd330ba0e7bfa9/lib/internal/fs/dir.js.html#L91

PR-URL: #36388
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-fs-opendir.js

@@ -244,6 +244,12 @@ async function doConcurrentAsyncAndSyncOps() {
 }
 doConcurrentAsyncAndSyncOps().then(common.mustCall());
 
+// Check read throw exceptions on invalid callback
+{
+  const dir = fs.opendirSync(testDir);
+  assert.throws(() => dir.read('INVALID_CALLBACK'), /ERR_INVALID_CALLBACK/);
+}
+
 // Check that concurrent read() operations don't do weird things.
 async function doConcurrentAsyncOps() {
   const dir = await fs.promises.opendir(testDir);