Add functionality to deselect radio buttons for usage_by_lms#1882

kkoehn merged 3 commits intomainopenHPI/codeharbor:mainfrom

1109-usage-by-lms-cannot-be-unset-through-uiopenHPI/codeharbor:1109-usage-by-lms-cannot-be-unset-through-uiCopy head branch name to clipboard