Fix missing registration of PeerTransactionTracker to dropped tx notifications (#7858)

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/TransactionBroadcaster.java

@@ -37,7 +37,8 @@ import com.google.common.annotations.VisibleForTesting;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class TransactionBroadcaster implements TransactionBatchAddedListener {
+public class TransactionBroadcaster
+    implements TransactionBatchAddedListener, PendingTransactionDroppedListener {
   private static final Logger LOG = LoggerFactory.getLogger(TransactionBroadcaster.class);
 
   private static final EnumSet<TransactionType> ANNOUNCE_HASH_ONLY_TX_TYPES = EnumSet.of(BLOB);
@@ -219,4 +220,9 @@ public class TransactionBroadcaster implements TransactionBatchAddedListener {
       destinationList.add(sourceList.remove(i));
     }
   }
+
+  @Override
+  public void onTransactionDropped(final Transaction transaction, final RemovalReason reason) {
+    transactionTracker.onTransactionDropped(transaction, reason);
+  }
 }

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/TransactionPool.java

@@ -139,6 +139,7 @@ public class TransactionPool implements BlockAddedObserver {
     subscribePendingTransactions(this::mapBlobsOnTransactionAdded);
     subscribeDroppedTransactions(
         (transaction, reason) -> unmapBlobsOnTransactionDropped(transaction));
+    subscribeDroppedTransactions(transactionBroadcaster);
   }
 
   private void initLogForReplay() {