This opens up the possibility of creating transactions in a wallet without persisting change addresses, which is needed in the case of fee estimations.
For this functionality to actually make an impact, a similar change is needed on the Sheikah side, so the preview: true flag is passed to createVTT and createDRT.
This opens up the possibility of creating transactions in a wallet without persisting change addresses, which is needed in the case of fee estimations.
Fix #2384