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/ToAndFromJsonMetadataTests.java
{
                            put("type1", new HashMap<String, Object>() {
                                {
                                    put("key", "value");
                                }
                            });
                        }
                    }))
                    .putAlias(AliasMetadata.builder("alias").indexRouting("indexRouting").build())
                    .numberOfShards(1)
                    .primaryTerm(0, 1L)
                    .putInSyncAllocationIds(0, new HashSet<>() {
                        {
                            add("allocationId");
                        }
                    })
                    .numberOfReplicas(2)
                    .putRolloverInfo(new RolloverInfo("rolloveAlias", new ArrayList<>(), 1L))
            )
            .put(
                IndexTemplateMetadata.builder("template")
                    .patterns(List.of("pattern1", "pattern2"))
                    .order(0)
                    .settings(Settings.builder().put(SETTING_VERSION_CREATED, Version.CURRENT.id))
                    .putMapping("type", "{ \"key1\": {} }")
                    .build()
            )
            .build();
    }
    public static class CustomMetadata extends TestCustomMetadata {