Based on an Audit of the code, this component has the following uses of ksort without an explicit sort order which means SORT_REGULAR is applied by default and this sort behavior changes in PHP 8.2.
See: https://php.watch/versions/8.2/ksort-SORT_REGULAR-order-changes

Instances:

• ./message/tests/privacy/provider_test.php:        ksort($notifications);
• ./message/tests/privacy/provider_test.php:        ksort($notifications);
• ./message/tests/externallib_test.php:        ksort($muas);
• ./message/tests/externallib_test.php:        ksort($muas);
• ./message/tests/externallib_test.php:        ksort($members);
• ./message/tests/externallib_test.php:        ksort($members);
• ./message/tests/api_test.php:        ksort($contacts);
• ./message/tests/api_test.php:        ksort($muas);
• ./message/tests/api_test.php:        ksort($muas);
• ./message/tests/api_test.php:        ksort($members);
• ./message/tests/api_test.php:        ksort($members);