### 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
assert SNAPSHOT_FORMAT.blobName(foundUUID).equals(blob);
                } else if (blob.startsWith(METADATA_PREFIX)) {
                    foundUUID = blob.substring(METADATA_PREFIX.length(), blob.length() - ".dat".length());
                    assert GLOBAL_METADATA_FORMAT.blobName(foundUUID).equals(blob);
                } else {
                    return false;
                }
                return allSnapshotIds.contains(foundUUID) == false;
            } else if (blob.startsWith(INDEX_FILE_PREFIX)) {
                // 
                return repositoryData.getGenId() > Long.parseLong(blob.substring(INDEX_FILE_PREFIX.length()));
            }
            return false;
        }).toList();
    }
    private List<String> cleanupStaleRootFiles(
        long previousGeneration,
        Collection<SnapshotId> deletedSnapshots,
        List<String> blobsToDelete
    ) {
        if (blobsToDelete.isEmpty()) {
            return blobsToDelete;
        }
        try {
            if (logger.isInfoEnabled()) {
                // 
                // 
                // 
                final Set<String> blobNamesToIgnore = deletedSnapshots.stream()
                    .flatMap(