Backport MDL-72324 to Moodle 3.9

MDL-72324 was never applied to Moodle 3.9 and Moodle 3.10, which means that a plugin developer who's still supporting the LTS releases can't include a supported range starting at 39 and set the incompatible value, because unit tests on the MOODLE_39_STABLE will always fail (see for example https://github.com/LafColITS/moodle-local_remote_courses/actions/runs/4077464517).