message: signet: Fix uninitialized read in validation
diff: @@ -344,6 +344,7 @@ public:
  consensus.fPowNoRetargeting = false;
  consensus.nRuleChangeActivationThreshold = 1916;
  consensus.nMinerConfirmationWindow = 2016;
  + consensus.MinBIP9WarningHeight = 0;
  consensus.powLimit = uint256S("00000377ae000000000000000000000000000000000000000000000000000000");
  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
  