core, eth, internal, rpc: implement final block (#24282)

* eth: core: implement finalized block

* eth/catalyst: fix final block

* eth/catalyst: update finalized head gauge

* internal/jsre/deps: updated web3.js to allow for finalized block

* eth/catalyst: make sure only one thread can call fcu

* eth/catalyst: nitpicks

* eth/catalyst: use plain mutex

* eth: nitpicks

internal/jsre/deps/web3.js

@@ -3696,7 +3696,7 @@ var outputBigNumberFormatter = function (number) {
 };
 
 var isPredefinedBlockNumber = function (blockNumber) {
-    return blockNumber === 'latest' || blockNumber === 'pending' || blockNumber === 'earliest';
+    return blockNumber === 'latest' || blockNumber === 'pending' || blockNumber === 'earliest' || blockNumber === 'finalized';
 };
 
 var inputDefaultBlockNumberFormatter = function (blockNumber) {