test: move test-shadow-realm-gc.js to known_issues

There is actually a leak. The test doesn't exercise the right
path to create a substantial enough object graph (e.g.
accessing something that results in the loading of a binding).
This does something more complicated in the test and moves it
to known_issues until we find a fix.

PR-URL: nodejs#47355
Refs: nodejs#47353
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

test/known_issues/known_issues.status

@@ -11,6 +11,9 @@ prefix known_issues
 # foreseeable future. The test itself is flaky and skipped.  It
 # serves as a demonstration of the issue only.
 test-vm-timeout-escape-queuemicrotask: SKIP
+# Skipping it because it crashes out of OOM instead of exiting.
+# https://github.com/nodejs/node/issues/47353
+test-shadow-realm-gc: SKIP
 
 [$system==win32]
 

test/known_issues/test-shadow-realm-gc.js

@@ -0,0 +1,13 @@
+// Flags: --experimental-shadow-realm --max-old-space-size=20
+'use strict';
+
+/**
+ * Verifying ShadowRealm instances can be correctly garbage collected.
+ */
+
+require('../common');
+
+for (let i = 0; i < 1000; i++) {
+  const realm = new ShadowRealm();
+  realm.evaluate('new TextEncoder(); 1;');
+}