test: add test case for throwing an exception with vm.Script

It failed with `FATAL ERROR: v8::ToLocalChecked Empty MaybeLocal`.

PR-URL: #17343
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>

test/parallel/test-vm-script-throw-in-tostring.js

@@ -0,0 +1,14 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+const vm = require('vm');
+
+assert.throws(() => {
+  new vm.Script({
+    toString() {
+      throw new Error();
+    }
+  });
+}, Error);