Revert "miner: Remove old CreateNewBlock w/o chainstate param"

This reverts commit 2afcf24.

Author: dongcarl

src/miner.cpp

@@ -96,6 +96,11 @@ void BlockAssembler::resetBlock()
     nFees = 0;
 }
 
+std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& scriptPubKeyIn)
+{
+    return CreateNewBlock(::ChainstateActive(), scriptPubKeyIn);
+}
+
 std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(CChainState& chainstate, const CScript& scriptPubKeyIn)
 {
     int64_t nTimeStart = GetTimeMicros();

src/miner.h

@@ -158,6 +158,7 @@ class BlockAssembler
     explicit BlockAssembler(const CTxMemPool& mempool, const CChainParams& params, const Options& options);
 
     /** Construct a new block template with coinbase to scriptPubKeyIn */
+    std::unique_ptr<CBlockTemplate> CreateNewBlock(const CScript& scriptPubKeyIn);
     std::unique_ptr<CBlockTemplate> CreateNewBlock(CChainState& chainstate, const CScript& scriptPubKeyIn);
 
     inline static std::optional<int64_t> m_last_block_num_txs{};