eadd1304c81e0b89178e4cc7630bd31650850c85 tests: Add a test for funding with sufficient preset inputs and subtractFeeFromOutputs (Andrew Chow)
ff330badd45067cb520b1cfa1844f60a4c9f2031 Default to bnb_used = false as there are many cases where BnB is not used (Andrew Chow)
Pull request description:
#17290 introduced a bug where, when we had preset inputs that covered the amount being sent and subtractFeeFrromOutputs was being used, transaction funding would result in a `Fee exceeds maximum configured by -maxtxfee` error. This was happening because we weren't setting `bnb_used = false` when the preset inputs were used as it should have been. This resulted in a too high fee because the change would go to fees accidentally. Apparently this particular case doesn't have a test, so I've added one as well.
Backport of Core PR17568
Depends on D7688