Fix for zombie invalid and penalized txs (#7659)

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>
Co-authored-by: Sally MacFarlane <macfarla.github@gmail.com>

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/layered/LayeredPendingTransactions.java

@@ -351,9 +351,7 @@ public class LayeredPendingTransactions implements PendingTransactions {
                     }
                   });
               logDiscardedTransaction(candidatePendingTx, selectionResult);
-            }
-
-            if (selectionResult.penalize()) {
+            } else if (selectionResult.penalize()) {
               ethScheduler.scheduleTxWorkerTask(
                   () -> {
                     synchronized (this) {