message: Remove calls to global Params() in tx_pool test
diff: @@ -86,7 +86,7 @@ void Finish(FuzzedDataProvider& fuzzed_data_provider, MockedTxPool& tx_pool, CCh
  BlockAssembler::Options options;
  options.nBlockMaxWeight = fuzzed_data_provider.ConsumeIntegralInRange(0U, MAX_BLOCK_WEIGHT);
  options.blockMinFeeRate = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)};
  - auto assembler = BlockAssembler{chainstate, *static_cast<CTxMemPool*>(&tx_pool), ::Params(), options};
  + auto assembler = BlockAssembler{chainstate, *static_cast<CTxMemPool*>(&tx_pool), chainstate.m_params, options};
  auto block_template = assembler.CreateNewBlock(CScript{} << OP_TRUE);
  Assert(block_template->block.vtx.size() >= 1);
  }
  @@ -224,13 +224,12 @@ FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
  // 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));
  + return ProcessNewPackage(chainstate, 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);
  - CChainState& chainstate{node.chainman->ActiveChainstate()};
  const auto res = WITH_LOCK(::cs_main, return AcceptToMemoryPool(tx_pool, chainstate, tx, GetTime(), bypass_limits, /* test_accept= */ false));
  const bool accepted = res.m_result_type == MempoolAcceptResult::ResultType::VALID;
  SyncWithValidationInterfaceQueue();
  