Improve provided handling (#381)

* fix typos

* remove tributary sleeping

* handle not locally provided txs

* use topic number instead of waiting list

* Clean-up, fixes

1) Uses a single TXN in provided
2) Doesn't continue on non-local provided inside verify_block, skipping further
   execution of checks
3) Upon local provision of already on-chain TX, compares

---------

Co-authored-by: Luke Parker <lukeparker5132@gmail.com>

coordinator/tributary/tendermint/src/lib.rs

@@ -794,6 +794,9 @@ impl<N: Network + 'static> TendermintMachine<N> {
       if self.block.log.has_consensus(self.block.round().number, Data::Prevote(Some(block.id()))) {
         match self.network.validate(block).await {
           Ok(_) => (),
+          // BlockError::Temporal is due to a temporal error we have, yet a supermajority of the
+          // network does not, Because we do not believe this block to be fatally invalid, and
+          // because a supermajority deems it valid, accept it.
           Err(BlockError::Temporal) => (),
           Err(BlockError::Fatal) => {
             log::warn!(target: "tendermint", "Validator proposed a fatally invalid block");