[`Setting.versionSetting`](https://github.com/elastic/elasticsearch/blob/0652a5915586abbcdfdfffa91a391740f0147752/server/src/main/java/org/elasticsearch/common/settings/Setting.java#L1275) (only used by index compatibility setting) does not use the `Validator` passed in - its just discarded. Looks like it's been like this since it was introduced by https://github.com/elastic/elasticsearch/pull/83264 in 8.2.0.

Enabling this causes some tests to fail. Enabling this may cause problems for indexes that have a wonky setting already applied.
server/src/main/java/org/elasticsearch/common/settings/Setting.java
Stream.concat(matchStream(current), matchStream(previous)).distinct().forEach(aKey -> {
                        String namespace = key.getNamespace(aKey);
                        Setting<T> concreteSetting = getConcreteSetting(namespace, aKey);
                        AbstractScopedSettings.SettingUpdater<T> updater = concreteSetting.newUpdater(
                            (v) -> consumer.accept(namespace, v),
                            logger,
                            (v) -> validator.accept(namespace, v)
                        );
                        if (updater.hasChanged(current, previous)) {
                            
                            
                            T value = updater.getValue(current, previous);
                            result.put(updater, value);
                        }
                    });
                    return result;
                }
                @Override
                public void apply(Map<AbstractScopedSettings.SettingUpdater<T>, T> value, Settings current, Settings previous) {
                    for (Map.Entry<AbstractScopedSettings.SettingUpdater<T>, T> entry : value.entrySet()) {
                        entry.getKey().apply(entry.getValue(), current, previous);
                    }
                }
            };
        }
        AbstractScopedSettings.SettingUpdater<Map<String, T>> newAffixMapUpdater(
            Consumer<Map<String, T>> consumer,
            Logger logger,
            BiConsumer<String, T> validator
        ) {