NPE when duplicating offer if the account does not exist.

[ghost]

Description

Go to Portfolio -> History. Click on the icon to duplicate one of your previous offers. If the account of that offer is not available, a NPE error box will be displayed.

Version

1.9.1, probably earlier versions too.

Expected behaviour

• If possible, clear the account selection which would make the user choose an account to enter the offer.

Screenshots

May-31 11:25:48.280 [JavaFX Application Thread] ERROR bisq.common.setup.CommonSetup: throwableClass= class java.lang.NullPointerException 
May-31 11:25:48.293 [JavaFX Application Thread] ERROR bisq.common.setup.CommonSetup: Stack trace:
java.lang.NullPointerException
    at bisq.desktop.main.offer.bisq_v1.MutableOfferDataModel.isUsingHalCashAccount(MutableOfferDataModel.java:804)
    at bisq.desktop.main.offer.bisq_v1.MutableOfferViewModel.setAmountToModel(MutableOfferViewModel.java:1176)
    at bisq.desktop.main.offer.bisq_v1.MutableOfferViewModel.onFocusOutAmountTextField(MutableOfferViewModel.java:724)
    at bisq.desktop.main.offer.bisq_v1.MutableOfferViewModel.triggerFocusOutOnAmountFields(MutableOfferViewModel.java:861)
    at bisq.desktop.main.portfolio.duplicateoffer.DuplicateOfferViewModel.activate(DuplicateOfferViewModel.java:89)
    at bisq.desktop.common.model.ActivatableWithDataModel._activate(ActivatableWithDataModel.java:29)
    at bisq.desktop.common.view.ActivatableViewAndModel.lambda$prepareInitialize$0(ActivatableViewAndModel.java:37)

[ripcurlx]

@xyzmaker123 Could you take this one? Thanks!