Downsampling is broken. Not sure why yet (likely caused by #97557). Invoking the downsample api results into:

```
org.elasticsearch.ElasticsearchSecurityException: no indices permissions found
        at org.elasticsearch.xpack.core.security.support.Exceptions.authorizationError(Exceptions.java:32) ~[?:?]
        at org.elasticsearch.xpack.core.security.authz.accesscontrol.SecurityIndexReaderWrapper.getIndicesAccessControl(SecurityIn
dexReaderWrapper.java:110) ~[?:?]
        at org.elasticsearch.xpack.core.security.authz.accesscontrol.SecurityIndexReaderWrapper.apply(SecurityIndexReaderWrapper.j
ava:76) ~[?:?]
        at org.elasticsearch.xpack.core.security.authz.accesscontrol.SecurityIndexReaderWrapper.apply(SecurityIndexReaderWrapper.j
ava:46) ~[?:?]
        at org.elasticsearch.index.shard.IndexShard.wrapSearcher(IndexShard.java:1590) ~[elasticsearch-8.11.0-SNAPSHOT.jar:?]
        at org.elasticsearch.index.shard.IndexShard.wrapSearcher(IndexShard.java:1561) ~[elasticsearch-8.11.0-SNAPSHOT.jar:?]
        at org.elasticsearch.index.engine.Engine$SearcherSupplier.acquireSearcher(Engine.java:1321) ~[elasticsearch-8.11.0-SNAPSHO
T.jar:?]
        at org.elasticsearch.index.engine.Engine.acquireSearcher(Engine.java:774) ~[elasticsearch-8.11.0-SNAPSHOT.jar:?]
        at org.elasticsearch.index.shard.IndexShard.acquireSearcher(IndexShard.java:1549) ~[elasticsearch-8.11.0-SNAPSHOT.jar:?]
        at org.elasticsearch.xpack.downsample.DownsampleShardIndexer.<init>(DownsampleShardIndexer.java:115) ~[?:?]
        at org.elasticsearch.xpack.downsample.DownsampleShardPersistentTaskExecutor.startDownsampleShardIndexer(DownsampleShardPersistentTaskExecutor.java:111) ~[?:?]
        at org.elasticsearch.xpack.downsample.DownsampleShardPersistentTaskExecutor$1.doRun(DownsampleShardPersistentTaskExecutor.java:87) ~[?:?]
        at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:983) ~[elasticsearch-8.11.0-SNAPSHOT.jar:?]
        at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:26) ~[elasticsearch-8.11.0-SNAPSHOT.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
        at java.lang.Thread.run(Thread.java:1623) ~[?:?]
```
x-pack/plugin/security/qa/operator-privileges-tests/src/javaRestTest/java/org/elasticsearch/xpack/security/operator/Constants.java
"cluster:admin/xpack/ml/inference/delete",
        "cluster:admin/xpack/ml/inference/put",
        "cluster:admin/xpack/ml/inference/model_aliases/put",
        "cluster:admin/xpack/ml/inference/model_aliases/delete",
        "cluster:admin/xpack/ml/job/close",
        "cluster:admin/xpack/ml/job/data/post",
        "cluster:admin/xpack/ml/job/delete",
        "cluster:admin/xpack/ml/job/estimate_model_memory",
        "cluster:admin/xpack/ml/job/flush",
        "cluster:admin/xpack/ml/job/forecast",
        "cluster:admin/xpack/ml/job/forecast/delete",
        "cluster:admin/xpack/ml/job/model_snapshots/delete",
        "cluster:admin/xpack/ml/job/model_snapshots/revert",
        "cluster:admin/xpack/ml/job/model_snapshots/update",
        "cluster:admin/xpack/ml/job/model_snapshots/upgrade",
        "cluster:admin/xpack/ml/job/model_snapshots/upgrade/cancel",
        "cluster:admin/xpack/ml/job/open",
        "cluster:admin/xpack/ml/job/persist",
        "cluster:admin/xpack/ml/job/put",
        "cluster:admin/xpack/ml/job/reset",
        "cluster:admin/xpack/ml/job/update",
        "cluster:admin/xpack/ml/job/validate",
        "cluster:admin/xpack/ml/job/validate/detector",
        "cluster:admin/xpack/ml/trained_models/deployment/clear_cache",
        "cluster:admin/xpack/ml/trained_models/deployment/start",
        "cluster:admin/xpack/ml/trained_models/deployment/stop",
        "cluster:admin/xpack/ml/trained_models/deployment/update",
        "cluster:admin/xpack/ml/trained_models/part/put",
        "cluster:admin/xpack/ml/trained_models/vocabulary/put",
        "cluster:admin/xpack/ml/upgrade_mode",