Getting "Invalid enum value unknown" when trying to update mailboxSettings

Describe the bug

I am trying to update the mailboxSettings of a user via the following script

$mailboxSettings = new MailboxSettings();

$automaticRepliesSetting = new AutomaticRepliesSetting();
$automaticRepliesSetting->setStatus(new AutomaticRepliesStatus(AutomaticRepliesStatus::DISABLED));
$automaticRepliesSetting->setExternalAudience(new ExternalAudienceScope(ExternalAudienceScope::ALL));
$automaticRepliesSetting->setExternalReplyMessage("I am out of office with limited access to email.");
$automaticRepliesSetting->setInternalReplyMessage("I am out of office with limited access to email.");
$mailboxSettings->setAutomaticRepliesSetting($automaticRepliesSetting);

$response = $msGraph
    ->getClient()
    ->users()
    ->byUserId(<USERID>)
    ->mailboxSettings()
    ->patch($mailboxSettings)
    ->wait();

And I receive the following exception

Exception 'InvalidArgumentException' with message 'Invalid enum value unknown'

in /var/www/html/vendor/microsoft/kiota-abstractions/src/Enum.php:57

Stack trace:
#0 /var/www/html/vendor/microsoft/kiota-serialization-json/src/JsonParseNode.php(164): Microsoft\Kiota\Abstractions\Enum->__construct('unknown')
#1 /var/www/html/vendor/microsoft/microsoft-graph/src/Generated/Models/MailboxSettings.php(121): Microsoft\Kiota\Serialization\Json\JsonParseNode->getEnumValue('Microsoft\\Graph...')
#2 /var/www/html/vendor/microsoft/kiota-serialization-json/src/JsonParseNode.php(141): Microsoft\Graph\Generated\Models\MailboxSettings->Microsoft\Graph\Generated\Models\{closure}(Object(Microsoft\Kiota\Serialization\Json\JsonParseNode))
#3 /var/www/html/vendor/microsoft/kiota-serialization-json/src/JsonParseNode.php(114): Microsoft\Kiota\Serialization\Json\JsonParseNode->assignFieldValues(Object(Microsoft\Graph\Generated\Models\MailboxSettings))
#4 /var/www/html/vendor/microsoft/kiota-http-guzzle/src/GuzzleRequestAdapter.php(170): Microsoft\Kiota\Serialization\Json\JsonParseNode->getObjectValue(Array)
#5 /var/www/html/vendor/php-http/promise/src/FulfilledPromise.php(39): Microsoft\Kiota\Http\GuzzleRequestAdapter->Microsoft\Kiota\Http\{closure}(Object(GuzzleHttp\Psr7\Response))
#6 /var/www/html/vendor/microsoft/kiota-http-guzzle/src/GuzzleRequestAdapter.php(145): Http\Promise\FulfilledPromise->then(Object(Closure))
#7 /var/www/html/vendor/microsoft/microsoft-graph/src/Generated/Users/Item/MailboxSettings/MailboxSettingsRequestBuilder.php(59): Microsoft\Kiota\Http\GuzzleRequestAdapter->sendAsync(Object(Microsoft\Kiota\Abstractions\RequestInformation), Array, Array)
#8 /var/www/html/commands/OutOfOfficeController.php(99): Microsoft\Graph\Generated\Users\Item\MailboxSettings\MailboxSettingsRequestBuilder->patch(Object(Microsoft\Graph\Generated\Models\MailboxSettings))

MailboxSettings.php(121) -> points to UserPurpose which is a readonly value and shouldn't be set.

If a try to set it
e.g.

$mailboxSettings->setUserPurpose(new UserPurpose(UserPurpose::ROOM));

I get the error, the property 'userPurpose' was specified but is not supported with this request.

Expected behavior

The request to succeed without having to call setSserPurpose property

How to reproduce

Execute the above script

SDK Version

2.12.0

Latest version known to work for scenario above?

No response

Known Workarounds

Use msgraph-sdk-php-core and execute the request manually ie

$httpClient = GraphClientFactory::createWithConfig($config);
$response = $httpClient->patch(
    '/v1.0/users/<USER-ID>/mailboxSettings',
    [
        'json' => [
            'automaticRepliesSetting' => [
                "externalAudience"=> "all",
                "status" => "disabled"
            ]
        ]
    ]
);

Debug output

</details>


### Configuration

PHP 8.3

### Other information

_No response_