fix: rpc improvements for CJ derivation path

Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>

Author: knst

src/wallet/rpc/backup.cpp

@@ -1977,7 +1977,7 @@ RPCHelpMan listdescriptors()
                     {RPCResult::Type::NUM, "timestamp", "The creation time of the descriptor"},
                     {RPCResult::Type::BOOL, "active", "Whether this descriptor is currently used to generate new addresses"},
                     {RPCResult::Type::BOOL, "internal", /*optional=*/true, "True if this descriptor is used to generate change addresses. False if this descriptor is used to generate receiving addresses; defined only for active descriptors"},
-                    {RPCResult::Type::BOOL, "coinjoin", /*optional=*/true, "True if this descriptor is used to generate CoinJoin addresses. False if this descriptor is used to generate receiving addresses; defined only for active descriptors"},
+                    {RPCResult::Type::BOOL, "coinjoin", /*optional=*/true, "True if this descriptor is used to generate CoinJoin addresses. False if this descriptor is used to generate receiving addresses."},
                     {RPCResult::Type::ARR_FIXED, "range", /*optional=*/true, "Defined only for ranged descriptors", {
                         {RPCResult::Type::NUM, "", "Range start inclusive"},
                         {RPCResult::Type::NUM, "", "Range end inclusive"},
@@ -2041,10 +2041,7 @@ RPCHelpMan listdescriptors()
         if (type != std::nullopt) {
             std::string match = strprintf("/%d'/%s'/4'/0'", BIP32_PURPOSE_FEATURE, Params().ExtCoinType());
             bool is_cj = descriptor.find(match) != std::string::npos;
-            if (is_cj) {
-                spk.pushKV("internal", false);
-                spk.pushKV("coinjoin", is_cj);
-            }
+            spk.pushKV("coinjoin", is_cj);
         }
         if (wallet_descriptor.descriptor->IsRange()) {
             UniValue range(UniValue::VARR);