### CI Link

https://gradle-enterprise.elastic.co/s/oyi6h23yl6k3o/tests/:x-pack:qa:full-cluster-restart:v8.11.0%23bwcTest/org.elasticsearch.xpack.restart.CoreFullClusterRestartIT/testClusterState%20%7Bcluster=OLD%7D

### Repro line

./gradlew ':qa:full-cluster-restart:v8.11.0#bwcTest' -Dtests.class="org.elasticsearch.upgrades.FullClusterRestartIT"

### Does it reproduce?

Yes

### Applicable branches

main

### Failure history

_No response_

### Failure excerpt

This test assumes that the index created version in cluster state matches the old node version.

That is no longer true due to the introduction of `IndexVersion`

https://github.com/elastic/elasticsearch/blob/52a6820813577abcb23191d862a01e32e652ed42/qa/full-cluster-restart/src/javaRestTest/java/org/elasticsearch/upgrades/FullClusterRestartIT.java#L435-L440
qa/full-cluster-restart/src/javaRestTest/java/org/elasticsearch/upgrades/FullClusterRestartIT.java
mappingsAndSettings.field("number_of_shards", 1);
                mappingsAndSettings.field("number_of_replicas", 0);
                mappingsAndSettings.endObject();
            }
            {
                mappingsAndSettings.startObject("mappings");
                mappingsAndSettings.startObject("properties");
                {
                    mappingsAndSettings.startObject("string");
                    mappingsAndSettings.field("type", "text");
                    mappingsAndSettings.endObject();
                }
                {
                    mappingsAndSettings.startObject("dots_in_field_names");
                    mappingsAndSettings.field("type", "text");
                    mappingsAndSettings.endObject();
                }
                {
                    mappingsAndSettings.startObject("binary");
                    mappingsAndSettings.field("type", "binary");
                    mappingsAndSettings.field("store", "true");
                    mappingsAndSettings.endObject();
                }
                mappingsAndSettings.endObject();
                mappingsAndSettings.endObject();
            }
            mappingsAndSettings.endObject();
            Request createIndex = new Request("PUT", "/" + index);
            createIndex.setJsonEntity(Strings.toString(mappingsAndSettings));
            client().performRequest(createIndex);