test: add regression test for v8.getHeapSnapshot() crash

Fixes: #35559

PR-URL: #35612
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

test/parallel/test-v8-getheapsnapshot-twice.js

@@ -0,0 +1,9 @@
+'use strict';
+require('../common');
+const v8 = require('v8');
+
+// Regression test for https://github.com/nodejs/node/issues/35559
+// It is important that the return value of the first call is not used, i.e.
+// that the first snapshot is GC-able while the second one is being created.
+v8.getHeapSnapshot();
+v8.getHeapSnapshot();