expand of appRoleAssignments on user get call yields no results

Describe the bug

I was trying to get a user together with it's appRoleAssignments in one call. The documentation is pointing out that the expand feature for appRoleAssignments is supported. But it doesn't work.

Expected behavior

I would expect the expand to return results.

How to reproduce

            User user = graphClient.usersWithUserPrincipalName(username).get(
                rc -> {
                    rc.queryParameters.select = new String[]{"id", "userPrincipalName", "displayName", "givenName", "surname", "accountEnabled"};
                    rc.queryParameters.expand = new String[]{"appRoleAssignments"};
                }
            );

or

graphClient.users().byUserId(username).get(
                rc -> {
                    rc.queryParameters.select = new String[]{"id", "userPrincipalName", "displayName", "givenName", "surname", "accountEnabled"};
                    rc.queryParameters.expand = new String[]{"appRoleAssignments"};
                }
            );

SDK Version

6.22.0

Latest version known to work for scenario above?

No response

Known Workarounds

For now I have to write this code to get it done:

            var user = graphClient.usersWithUserPrincipalName(username).get(
                rc -> rc.queryParameters.select = new String[]{"id", "userPrincipalName", "displayName", "givenName", "surname", "accountEnabled"}
            );
            user.setAppRoleAssignments(getAllAppRoleAssignments(user.getId())); // an 'expand' of appRoleAssignments in the above call gave an empty array :| ...
            return user;

    private List<AppRoleAssignment> getAllAppRoleAssignments(String userId) {
        var result = new ArrayList<AppRoleAssignment>();
        var page = graphClient.users().byUserId(userId).appRoleAssignments().get();
        while (page != null) {
            result.addAll(Optional.ofNullable(page.getValue()).orElse(emptyList()));
            var odataNextLink = page.getOdataNextLink();
            if (StringUtils.isBlank(odataNextLink)) {
                break;
            } else {
                page = graphClient.users().byUserId(userId).appRoleAssignments().withUrl(odataNextLink).get();
            }
        }
        return result;
    }

Debug output

</details>


### Configuration

_No response_

### Other information

_No response_

Start by reproducing the two user GET calls in the issue with the appRoleAssignments expand and compare their responses with the separate appRoleAssignments request. Check whether the documented expand behavior is supported by the Graph service and SDK version 6.22.0; done means the combined request returns the expected assignments or the limitation is documented.