message: [fuzz] add ProcessNewPackage call in tx_pool fuzzer
diff: @@ -219,6 +219,16 @@ FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
  RegisterSharedValidationInterface(txr);
  const bool bypass_limits = fuzzed_data_provider.ConsumeBool();
  ::fRequireStandard = fuzzed_data_provider.ConsumeBool();
  +
  + // Make sure ProcessNewPackage on one transaction works and always fully validates the transaction.
  + // The result is not guaranteed to be the same as what is returned by ATMP.
  + const auto result_package = WITH_LOCK(::cs_main,
  + return ProcessNewPackage(node.chainman->ActiveChainstate(), tx_pool, {tx}, true));
  + auto it = result_package.m_tx_results.find(tx->GetWitnessHash());
  + Assert(it != result_package.m_tx_results.end());
  + Assert(it->second.m_result_type == MempoolAcceptResult::ResultType::VALID ||
  + it->second.m_result_type == MempoolAcceptResult::ResultType::INVALID);
  +
  const auto res = WITH_LOCK(::cs_main, return AcceptToMemoryPool(chainstate, tx_pool, tx, bypass_limits));
  const bool accepted = res.m_result_type == MempoolAcceptResult::ResultType::VALID;
  SyncWithValidationInterfaceQueue();
  