cmd/geth: implement dev mode for post-merge (#27327)

This change adds back the 'geth --dev' mode of operation, using a cl-mocker. 

---------

Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: lightclient <14004106+lightclient@users.noreply.github.com>

eth/catalyst/queue.go

@@ -73,7 +73,7 @@ func (q *payloadQueue) put(id engine.PayloadID, payload *miner.Payload) {
 }
 
 // get retrieves a previously stored payload item or nil if it does not exist.
-func (q *payloadQueue) get(id engine.PayloadID) *engine.ExecutionPayloadEnvelope {
+func (q *payloadQueue) get(id engine.PayloadID, full bool) *engine.ExecutionPayloadEnvelope {
 	q.lock.RLock()
 	defer q.lock.RUnlock()
 
@@ -82,7 +82,10 @@ func (q *payloadQueue) get(id engine.PayloadID) *engine.ExecutionPayloadEnvelope
 			return nil // no more items
 		}
 		if item.id == id {
-			return item.payload.Resolve()
+			if !full {
+				return item.payload.Resolve()
+			}
+			return item.payload.ResolveFull()
 		}
 	}
 	return nil