[mempool]: improve tx reverting strategy

[Mirko-von-Leipzig]

Currently all transactions in a failed block are reverted in their entirety. Though blocks should not fail, the likely cause would be a bug in the processing of some transaction(s).

Probably most transactions in the block are fine, and we only need to weed out the couple that are causing issues. Right now our strategy just nukes the entire set.

We could improve this by allowing transactions to be part of failing proofs x number of times before reverting them. e.g. a transaction is only reverted entirely once it has been part of x batch and/or block failures.