### 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
* Validate that the action is sane. Called when the action is added to the request because actions can be invalid while being
         * built.
         */
        void validate() {
            if (indices == null) {
                throw new IllegalArgumentException("One of [index] or [indices] is required");
            }
            if (type != AliasActions.Type.REMOVE_INDEX && (aliases == null || aliases.length == 0)) {
                throw new IllegalArgumentException("One of [alias] or [aliases] is required");
            }
        }
        /**
         * Type of the action to perform.
         */
        public AliasActions.Type actionType() {
            return type;
        }
        @Override
        public AliasActions indices(String... indices) {
            if (indices == null || indices.length == 0) {
                throw new IllegalArgumentException("[indices] can't be empty");
            }
            for (String index : indices) {
                if (false == Strings.hasLength(index)) {
                    throw new IllegalArgumentException("[indices] can't contain empty string");
                }
            }
            this.indices = indices;
            return this;
        }