Cancel Trx locked amount not properly updated after cancel

[Anynomouss]

Cancelling a transaction does unlock the outputs, but does not update the locked amount shown in the GUI.
I compared the total shown in Grin++ with the total shown in grin-wallet (Rust), the total is correctly shown, so it is only the locked amount shown in the UI that does not update.
Restarting the UI by logging out logging in or restarting Grin++ altogether does not update the locked amount, so probably the locked total amount is somewhere stored after closing a Grin++ session.

Fix:

1. call an update of the UI to update the locked amount properly.