PSA: DO NOT use Boltz on LNBits

First, the lightning invoice that was created expired 5m after creation. So it was impossible to pay in the first place.

Then, when a day later I told the boltz system to recover the funds, it used a preset transaction fee of 1000 sats. 6 sats/vbyte. No RBF.

In practice, I now have 1.4M sats that will remain pending until it is cleared from the mempool, and I will probably never recover. STAY clear.