fix: update end date field to enable editing for maintenance events only

Author: Aloento

src/Components/Event/EventEditor.tsx

@@ -87,7 +87,7 @@ export function EventEditor({ Event }: { Event: Models.IEvent }) {
         <ScaleTextField
           type="datetime-local"
           label="(Plan) End CET"
-          disabled={!(!IsIncident(State.type) || !IsOpenStatus(State.status))}
+          disabled={!(State.type === EventType.Maintenance || !IsOpenStatus(State.status!))}
           value={State.end ? dayjs(State.end).format(Dic.Picker) : null}
           onScale-input={(e) => Actions.setEnd(new Date(e.target.value as string))}
           invalid={!!Validation.end}