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:

• ./course/tests/courselib_test.php:        ksort($oldsections);
• ./course/tests/courselib_test.php:        ksort($oldsections);
• ./course/tests/courselib_test.php:        ksort($sections);
• ./course/tests/courselib_test.php:        ksort($oldsections);
• ./course/tests/courselib_test.php:        ksort($sections);
• ./course/lib.php:                ksort($sequenceunique); // Preserve initial order of modules.