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/test/java/org/elasticsearch/plugins/PluginsServiceTests.java
@Override
        public void loadExtensions(ExtensionLoader loader) {
            assert extensions == null;
            extensions = loader.loadExtensions(TestExtensionPoint.class);
            
            expectThrows(UnsupportedOperationException.class, () -> extensions.add(new TestExtension1()));
        }
    }
    public static class TestPlugin extends Plugin {}
    public interface TestExtensionPoint {}
    public static class TestExtension1 implements TestExtensionPoint {}
    public static class TestExtension2 implements TestExtensionPoint {
        public Plugin plugin;
        public TestExtension2(TestPlugin plugin) {
            this.plugin = plugin;
        }
    }
    public static class BadSingleParameterConstructorExtension implements TestExtensionPoint {
        public BadSingleParameterConstructorExtension(String bad) {}
    }
    public static class TooManyParametersConstructorExtension implements TestExtensionPoint {
        public TooManyParametersConstructorExtension(String bad) {}
    }
    public static class ThrowingConstructorExtension implements TestExtensionPoint {
        public ThrowingConstructorExtension() {
            throw new IllegalArgumentException("test constructor failure");
        }
    }
}