test: rename test-regress-nodejsGH-4015

Rename the test appropriately alongside mentioning the subsystem
Also, make a few basic changes to make sure the test conforms
to the standard test structure

Refs: nodejs#19105
Refs: https://github.com/nodejs/node/blob/master/doc/guides/writing-tests.md#test-structure

test/sequential/test-regress-GH-4015.js → test/sequential/test-regress-fs-stat_sync.js

@@ -22,6 +22,14 @@
 'use strict';
 require('../common');
 const { fixturesDir } = require('../common/fixtures');
+
+// Check that the calls to Integer::New() and Date::New() succeed and bail out
+// if they don't.
+// V8 returns an empty handle on stack overflow. Trying to set the empty handle
+// as a property on an object results in a NULL pointer dereference in release
+// builds and an assert in debug builds.
+// https://github.com/nodejs/node-v0.x-archive/issues/4015
+
 const assert = require('assert');
 const { exec } = require('child_process');