There have been two instances of this today (both in PR builds) that blew up due to an OOME.

**Build scan:**
https://gradle-enterprise.elastic.co/s/ryfsljqpbyjlm/tests/:x-pack:plugin:ml:internalClusterTest/org.elasticsearch.xpack.ml.integration.MlDistributedFailureIT/testClusterWithTwoMlNodes_StopsDatafeed_GivenJobFailsOnReassign

**Reproduction line:**
`./gradlew ':x-pack:plugin:ml:internalClusterTest' --tests "org.elasticsearch.xpack.ml.integration.MlDistributedFailureIT.testClusterWithTwoMlNodes_StopsDatafeed_GivenJobFailsOnReassign" -Dtests.seed=A3E13461A939BDF6 -Dtests.locale=ar-IQ -Dtests.timezone=America/Porto_Velho -Druntime.java=17`

**Applicable branches:**
master

**Reproduces locally?:**
No

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.ml.integration.MlDistributedFailureIT&tests.test=testClusterWithTwoMlNodes_StopsDatafeed_GivenJobFailsOnReassign

**Failure excerpt:**
```
java.lang.Exception: Test abandoned because suite timeout was reached.

  at __randomizedtesting.SeedInfo.seed([A3E13461A939BDF6]:0)

```
server/src/main/java/org/elasticsearch/plugins/PluginsService.java
}
    }
    static LayerAndLoader createPlugin(
        PluginBundle bundle,
        ClassLoader pluginParentLoader,
        List<LoadedPlugin> extendedPlugins,
        LayerAndLoader spiLayerAndLoader
    ) {
        final PluginDescriptor plugin = bundle.plugin;
        if (plugin.getModuleName().isPresent()) {
            logger.debug(() -> "Loading bundle: " + plugin.getName() + ", modular");
            var parentLayers = Stream.concat(
                Stream.ofNullable(spiLayerAndLoader != null ? spiLayerAndLoader.layer() : null),
                extendedPlugins.stream().map(LoadedPlugin::layer)
            ).toList();
            return createPluginModuleLayer(bundle, pluginParentLoader, parentLayers);
        } else {
            logger.debug(() -> "Loading bundle: " + plugin.getName() + ", non-modular");
            return LayerAndLoader.ofLoader(URLClassLoader.newInstance(bundle.urls.toArray(URL[]::new), pluginParentLoader));
        }
    }
    /**
     * Reloads all Lucene SPI implementations using the new classloader.
     * This method must be called after the new classloader has been created to
     * register the services for use.
     */
    static void reloadLuceneSPI(ClassLoader loader) {
        
        
        PostingsFormat.reloadPostingsFormats(loader);