ListEvent from broker trying list event for deleted/umanaged machines

[ushabelgur]

Describe the bug
Broker is trying new events for already deleted machines. ListEvent logic is based on events list and it can iterated over deleted machines.

To Reproduce

1. create machines on ironcore
2. Delete machine
3. Check logs of broker

Expected behavior
EventList should not try create event for for deleted/unmanaged machines.

Screenshots