### CI Link

https://gradle-enterprise.elastic.co/s/ou2sap2dhy3q2/tests/:server:internalClusterTest/org.elasticsearch.snapshots.SharedClusterSnapshotRestoreIT/testDataFileFailureDuringSnapshot

### Repro line

./gradlew ':server:internalClusterTest' --tests "org.elasticsearch.snapshots.SharedClusterSnapshotRestoreIT.testDataFileFailureDuringSnapshot" -Dtests.seed=37B64CEE1DCEACEB -Dtests.locale=uk -Dtests.timezone=Africa/Lusaka -Druntime.java=17

### Does it reproduce?

Yes

### Applicable branches

main

### Failure history

_No response_

### Failure excerpt

```
java.lang.Exception: Test abandoned because suite timeout was reached. 
    at __randomizedtesting.SeedInfo.seed([37B64CEE1DCEACEB]:0)
```
server/src/main/java/org/elasticsearch/repositories/blobstore/BlobStoreRepository.java
RepositoryData repositoryData,
        long expectedGen,
        Version version,
        Function<ClusterState, ClusterState> stateFilter,
        ActionListener<RepositoryData> listener
    ) {
        logger.trace("[{}] writing  on top of expected generation [{}]", metadata.name(), expectedGen);
        assert isReadOnly() == false; // 
        final long Gen = repositoryData.getGenId();
        if (Gen != expectedGen) {
            // 
            // 
            listener.onFailure(
                new RepositoryException(
                    metadata.name(),
                    "con modification of the index-N file, expected  generation ["
                        + expectedGen
                        + "], actual  generation ["
                        + Gen
                        + "]"
                )
            );
            return;
        }
        // 
        final StepListener<Long> setPendingStep = new StepListener<>();
        final String setPendingGenerationSource = "set pending repository generation [" + metadata.name() + "][" + expectedGen + "]";
        submitUnbatchedTask(setPendingGenerationSource, new ClusterStateUpdateTask() {
            private long newGen;
            @Override