Make signrawtransaction accept P2SH-P2WSH redeemscripts

Github-Pull: #12427
Rebased-From: 5f605e172baee35421eb20736601befdd8cad796
Tree-SHA512: caf8c4e1806757d705493de30eea4f6a146a334ca6f6c93bc74cda43abda391b8406dd8ed6765fcde8eb86b3fb55689547ab69a30f34fca0d7896ea8c4e1db67

src/rpc/rawtransaction.cpp

@@ -848,6 +848,8 @@ UniValue signrawtransaction(const JSONRPCRequest& request)
                     std::vector<unsigned char> rsData(ParseHexV(v, "redeemScript"));
                     CScript redeemScript(rsData.begin(), rsData.end());
                     tempKeystore.AddCScript(redeemScript);
+                    // Automatically also add the P2WSH wrapped version of the script (to deal with P2SH-P2WSH).
+                    tempKeystore.AddCScript(GetScriptForWitness(redeemScript));
                 }
             }
         }