Added the ability to delete already finished assignments

src/dashboards/Teacher.tsx

@@ -163,6 +163,7 @@ export default function TeacherDashboard({user}: Props) {
 					onClose={() => {
 						setSelectedAssignment(undefined);
 						setIsCreatingAssignment(false);
+						reloadAssignments();
 					}}
 					assignment={selectedAssignment}
 				/>