On error message, prompt user to refresh app before trying again.

[JeffreyDoyle]

If the user encounters a connection issue with their Ledger device, we should prompt them to refresh the app before allowing them to continue, as this happens to be the fix that resolves some connection issues.

[relatko]

Does this in any way affect ledger app? As far as I understand this, if there is a connection issue, the the app running on ledger does not know about this and thus it cannot react. This is probably something for companion apps to solve. In ledger-app-flow, the best we can do is to modify the error message thrown by Ledger's BOLOS (ledger operating system) in our JS layer.