Some more earlier failures with the same issue (all in Windows builds):
https://gradle-enterprise.elastic.co/s/ic3vf76vlpiho
https://gradle-enterprise.elastic.co/s/7nsuvadgg5bbm
https://gradle-enterprise.elastic.co/s/7kcrezoswrgdg

**Build scan:**
https://gradle-enterprise.elastic.co/s/whgmtqrtovpgu/tests/:server:internalClusterTest/org.elasticsearch.reservedstate.service.FileSettingsServiceIT/testErrorSaved

**Reproduction line:**
`gradlew ':server:internalClusterTest' --tests "org.elasticsearch.reservedstate.service.FileSettingsServiceIT.testErrorSaved" -Dtests.seed=762F971779043BEB -Dtests.locale=es-BO -Dtests.timezone=Africa/Luanda -Druntime.java=18`

**Applicable branches:**
main

**Reproduces locally?:**
Didn't try

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.reservedstate.service.FileSettingsServiceIT&tests.test=testErrorSaved

**Failure excerpt:**
```
org.elasticsearch.cluster.metadata.ProcessClusterEventTimeoutException: failed to process cluster event (delete_repository [*]) within 30s

  at __randomizedtesting.SeedInfo.seed([762F971779043BEB:C5DE1806AEE40E21]:0)
  at org.elasticsearch.cluster.service.MasterService$Batcher.lambda$onTimeout$1(MasterService.java:165)
  at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:825)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
  at java.lang.Thread.run(Thread.java:833)

```
server/src/test/java/org/elasticsearch/cluster/metadata/ReservedStateMetadataTests.java
equalsTest(false, false);
    }
    private void serializationTest(boolean addHandlers, boolean addErrors) throws IOException {
        final ReservedStateMetadata meta = createRandom(addHandlers, addErrors);
        final BytesStreamOutput out = new BytesStreamOutput();
        meta.writeTo(out);
        assertThat(ReservedStateMetadata.readFrom(out.bytes().streamInput()), equalTo(meta));
    }
    public void testSerialization() throws IOException {
        serializationTest(true, true);
        serializationTest(true, false);
        serializationTest(false, true);
        serializationTest(false, false);
    }
    private void xContentTest(boolean addHandlers, boolean addErrors) throws IOException {
        final ReservedStateMetadata meta = createRandom(addHandlers, addErrors);
        final XContentBuilder builder = JsonXContent.contentBuilder();
        builder.startObject();
        meta.toXContent(builder, ToXContent.EMPTY_PARAMS);
        builder.endObject();
        XContentParser parser = createParser(JsonXContent.jsonXContent, BytesReference.bytes(builder));
        parser.nextToken(); 
        assertThat(ReservedStateMetadata.fromXContent(parser), equalTo(meta));
    }
    public void testXContent() throws IOException {
        xContentTest(true, true);
        xContentTest(false, true);
        xContentTest(true, false);
        xContentTest(false, false);
    }