### CI Link

https://gradle-enterprise.elastic.co/s/ozb6lycxc43es/console-log?task=:security-authorization-engine:compileJava

### Repro line

cd plugin/examples; ./gradlew build --include-build ../..

### Does it reproduce?

Yes

### Applicable branches

master

### Failure history

_No response_

### Failure excerpt

After merging https://github.com/elastic/elasticsearch/pull/86246 example builds started failing with compilation errors 

```
> Task :security-authorization-engine:compileJava FAILED
/Users/rene/dev/elasticsearch-master/plugins/examples/security-authorization-engine/src/main/java/org/elasticsearch/example/CustomAuthorizationEngine.java:50: error: cannot find symbol
        if (authentication.getUser().isRunAs()) {
                                    ^
  symbol:   method isRunAs()
  location: class User
/Users/rene/dev/elasticsearch-master/plugins/examples/security-authorization-engine/src/main/java/org/elasticsearch/example/CustomAuthorizationEngine.java:52: error: cannot find symbol
                new CustomAuthorizationInfo(authentication.getUser().authenticatedUser().roles(), null);
                                                                    ^
  symbol:   method authenticatedUser()
  location: class User
/Users/rene/dev/elasticsearch-master/plugins/examples/security-authorization-engine/src/main/java/org/elasticsearch/example/CustomAuthorizationEngine.java:61: error: cannot find symbol
        if (isSuperuser(requestInfo.getAuthentication().getUser().authenticatedUser())) {
                                                                 ^
  symbol:   method authenticatedUser()
  location: class User
Note: /Users/rene/dev/elasticsearch-master/plugins/examples/security-authorization-engine/src/main/java/org/elasticsearch/example/CustomAuthorizationEngine.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
3 errors

```
plugins/examples/security-authorization-engine/src/main/java/org/elasticsearch/example/CustomAuthorizationEngine.java
listener.onResponse(AuthorizationResult.deny());
        }
    }
    @Override
    public void authorizeIndexAction(RequestInfo requestInfo, AuthorizationInfo authorizationInfo,
                                     AsyncSupplier<ResolvedIndices> indicesAsyncSupplier,
                                     Map<String, IndexAbstraction> aliasOrIndexLookup,
                                     ActionListener<IndexAuthorizationResult> listener) {
        if (isSuperuser(requestInfo.getAuthentication().getUser())) {
            indicesAsyncSupplier.getAsync(ActionListener.wrap(resolvedIndices -> {
                Map<String, IndexAccessControl> indexAccessControlMap = new HashMap<>();
                for (String name : resolvedIndices.getLocal()) {
                    indexAccessControlMap.put(name, new IndexAccessControl(true, FieldPermissions.DEFAULT, null));
                }
                IndicesAccessControl indicesAccessControl =
                    new IndicesAccessControl(true, Collections.unmodifiableMap(indexAccessControlMap));
                listener.onResponse(new IndexAuthorizationResult(true, indicesAccessControl));
            }, listener::onFailure));
        } else {
            listener.onResponse(new IndexAuthorizationResult(true, IndicesAccessControl.DENIED));
        }
    }
    @Override
    public void loadAuthorizedIndices(RequestInfo requestInfo, AuthorizationInfo authorizationInfo,
                                      Map<String, IndexAbstraction> indicesLookup, ActionListener<Set<String>> listener) {
        if (isSuperuser(requestInfo.getAuthentication().getUser())) {
            listener.onResponse(indicesLookup.keySet());
        } else {
            listener.onResponse(Collections.emptySet());
        }