message: test: call VerifyLoadedChainstate during ChainTestingSetup
  for additional coverage and similarity to actual init process.
diff: @@ -195,6 +195,16 @@ TestingSetup::TestingSetup(const std::string& chainName, const std::vector<const
  true);
  assert(!rv.has_value());
  + auto maybe_verify_failure = VerifyLoadedChainstate(
  + *Assert(m_node.chainman),
  + fReindex.load(),
  + m_args.GetBoolArg("-reindex-chainstate", false),
  + chainparams.GetConsensus(),
  + m_args.GetIntArg("-checkblocks", DEFAULT_CHECKBLOCKS),
  + m_args.GetIntArg("-checklevel", DEFAULT_CHECKLEVEL),
  + static_cast<int64_t(*)()>(GetTime));
  + assert(!maybe_verify_failure.has_value());
  +
  BlockValidationState state;
  if (!m_node.chainman->ActiveChainstate().ActivateBestChain(state)) {
  throw std::runtime_error(strprintf("ActivateBestChain failed. (%s)", state.ToString()));
  