Resolve "Requests for deleted assignments break history page"

What does this mr do?

Read #699 (closed)

Actions taken to fix bug

Does this MR meet the acceptance criteria?

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Deleted Assignments

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• I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide.

Closes #699 (closed)

src/main/java/nl/tudelft/queue/controller/LabController.java

@@ -753,6 +753,7 @@ public class LabController {
 	@Transactional
 	public void setEnqueuePageAttributes(QueueSession<?> qSession, Model model, Person person) {
 		var session = sCache.getRequired(qSession.getSession(), id -> ls.deleteSessionById(id));
+		ls.syncQueueSessionWithCore(qSession);
 		List<RoomDetailsDTO> rooms = session.getRooms().stream()
 				.sorted(Comparator.comparing(r -> r.getBuilding().getName() + r.getName())).toList();