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:

• ./h5p/tests/editor_framework_test.php:        $this->assertEquals(ksort($expectedlangs), ksort($langs));
• ./h5p/tests/editor_framework_test.php:        ksort($expectedlibraries);
• ./h5p/tests/editor_ajax_test.php:        ksort($actuallibraries);
• ./mod/h5pactivity/classes/output/result.php:        ksort($result);