### 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
}
        public static AliasActions fromXContent(XContentParser parser) throws IOException {
            return PARSER.apply(parser, null);
        }
        @Override
        public String toString() {
            return "AliasActions["
                + "type="
                + type
                + ",indices="
                + Arrays.toString(indices)
                + ",aliases="
                + Arrays.deepToString(aliases)
                + ",filter="
                + filter
                + ",routing="
                + routing
                + ",indexRouting="
                + indexRouting
                + ",searchRouting="
                + searchRouting
                + ",writeIndex="
                + writeIndex
                + ",mustExist="
                + mustExist
                + "]";
        }
        
        @Override
        public boolean equals(Object obj) {