### Elasticsearch Version

8.x

### Installed Plugins

_No response_

### Java Version

_bundled_

### OS Version

Any

### Problem Description

ILM [SwapAliasesAndDeleteSourceIndexStep](https://github.com/elastic/elasticsearch/blob/ffcf0eac010df3b5ba7989c5dd87bf362dd0d311/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ilm/SwapAliasesAndDeleteSourceIndexStep.java) doesn't play nicely with with hidden aliases. 

When we copy the aliases from the source index in the move step, we do not copy the is_hidden value.

This can lead to permanently bad ILM state with an error like:

```
policy [kibana-event-log-policy] for index [.kibana-event-log-7.11.1-000044] failed on step [{"phase":"frozen","action":"searchable_snapshot","name":"swap-aliases"}]. Moving to ERROR step java.lang.IllegalStateException: alias [.kibana-event-log-7.11.1] has is_hidden set to true on indices [...]; alias must have the same is_hidden setting on all indices at org.elasticsearch.cluster.metadata.Metadata$Builder.validateAlias(Metadata.java:2089) 
```

### Steps to Reproduce

Combination of ILM and hidden aliases.

### Logs (if relevant)

_No response_
server/src/main/java/org/elasticsearch/action/admin/indices/alias/IndicesAliasesRequest.java
this.searchRouting = searchRouting;
            return this;
        }
        public String routing() {
            return routing;
        }
        public String indexRouting() {
            return indexRouting == null ? routing : indexRouting;
        }
        public AliasActions indexRouting(String indexRouting) {
            if (type != AliasActions.Type.ADD) {
                throw new IllegalArgumentException("[index_routing] is unsupported for [" + type + "]");
            }
            this.indexRouting = indexRouting;
            return this;
        }
        public String filter() {
            return filter;
        }
        public AliasActions filter(String filter) {
            if (type != AliasActions.Type.ADD) {
                throw new IllegalArgumentException("[filter] is unsupported for [" + type + "]");
            }
            this.filter = filter;
            return this;
        }
        public AliasActions filter(Map<String, Object> filter) {
            if (filter == null || filter.isEmpty()) {
                this.filter = null;
                return this;