Re-verify invalid IS sigs when the active quorum set rotated (dashpay…

…#3052)

* Split ProcessPendingInstantSendLocks into two methods

* Split SelectQuorumForSigning into SelectQuorumForSigning and GetActiveQuorumSet

* Implement retrying of IS lock verification when the LLMQ active set rotates

src/llmq/quorums_instantsend.cpp

@@ -744,7 +744,7 @@ bool CInstantSendManager::ProcessPendingInstantSendLocks()
  tipHeight = chainActive.Height();
  }
 
- auto llmqType = Params().GetConsensus().llmqForInstaPAC;
+ auto llmqType = Params().GetConsensus().llmqForInstantSend;
 
  // Every time a new quorum enters the active set, an older one is removed. This means that between two blocks, the
  // active set can be different, leading to different selection of the signing quorum. When we detect such rotation
@@ -780,7 +780,7 @@ bool CInstantSendManager::ProcessPendingInstantSendLocks()
 
 std::unordered_set<uint256> CInstantSendManager::ProcessPendingInstantSendLocks(int signHeight, const std::unordered_map<uint256, std::pair<NodeId, CInstantSendLock>>& pend, bool ban)
 {
- auto llmqType = Params().GetConsensus().llmqForInstaPAC;
+ auto llmqType = Params().GetConsensus().llmqForInstantSend;
 
  CBLSBatchVerifier<NodeId, uint256> batchVerifier(false, true, 8);
  std::unordered_map<uint256, std::pair<CQuorumCPtr, CRecoveredSig>> recSigs;