PR created to solve the issue https://github.com/hummingbot/hummingbot/issues/5056
Changed the fetch order logic in the client order tracker to not look for orders using the exchange order id if it has not been provided as a parameter. Without this change if the exchange order id is not specified it will be None, and the fetch method will match orders in the tracker without exchange order id.
Also in this PR the update logic from a trade update has been changed to never update the exchange order id. That id should be only updated by the order update.