Filter out JNA Cleaner thread from test leak detection (#114668)

JNA has a static thread which handles cleaning up native memory
references. This commit adds the thread name to those filtered out of
thread leak detection since it lives for the lifetime of the JDK (yet
might be started in the middle of a test).

closes #114555

test/framework/src/main/java/org/elasticsearch/test/ESTestCase.java

@@ -225,7 +225,7 @@ import static org.hamcrest.Matchers.startsWith;
 @ThreadLeakScope(Scope.SUITE)
 @ThreadLeakLingering(linger = 5000) // 5 sec lingering
 @TimeoutSuite(millis = 20 * TimeUnits.MINUTE)
-@ThreadLeakFilters(filters = { GraalVMThreadsFilter.class, NettyGlobalThreadsFilter.class })
+@ThreadLeakFilters(filters = { GraalVMThreadsFilter.class, NettyGlobalThreadsFilter.class, JnaCleanerThreadsFilter.class })
 @LuceneTestCase.SuppressSysoutChecks(bugUrl = "we log a lot on purpose")
 // we suppress pretty much all the lucene codecs for now, except asserting
 // assertingcodec is the winner for a codec here: it finds bugs and gives clear exceptions.

test/framework/src/main/java/org/elasticsearch/test/JnaCleanerThreadsFilter.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+package org.elasticsearch.test;
+
+import com.carrotsearch.randomizedtesting.ThreadFilter;
+
+/**
+ * JNA has a special thread to cleanup native memory references. It is static per JVM, so we
+ * filter it out of test leak detection.
+ */
+public class JnaCleanerThreadsFilter implements ThreadFilter {
+    @Override
+    public boolean reject(Thread t) {
+        return t.getName().equals("JNA Cleaner");
+    }
+}