Stacks node miner should be able to recover from pending transaction

[kantai]

Currently, if a miner submits a block commit bitcoin transaction, but the next bitcoin block arrives without picking up that transaction, the neon_node will enter into a deteriorated state: it will try to mine a new transaction for the new block, but it may not be able to "find" a UTXO, because the only UTXO is outstanding.

There's two ways that this could be addressed (possibly both could be implemented)

1. Set the neon_node to "wait" until the next burn block if it's unable to mine in the current block (something like Feature: do not mine in a burn block if failed already #2335)
2. Issue a replace-by-fee transaction to update the pending transaction (this would be very beneficial, because it allows the miner to "correct" the pending transaction into a valid commitment).

[lgalabru]

Should be addressed with #2383

[lgalabru]

Addressed with https://github.com/blockstack/stacks-blockchain/releases/tag/2.0.3