Disallow sendtoaddress and sendmany when private keys disabled

Github-Pull: #21201
Rebased-From: 0997019e76

src/wallet/rpcwallet.cpp

@@ -400,6 +400,12 @@ UniValue SendMoney(CWallet* const pwallet, const CCoinControl &coin_control, std
 {
     EnsureWalletIsUnlocked(pwallet);
 
+    // This function is only used by sendtoaddress and sendmany.
+    // This should always try to sign, if we don't have private keys, don't try to do anything here.
+    if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "Error: Private keys are disabled for this wallet");
+    }
+
     // Shuffle recipient list
     std::shuffle(recipients.begin(), recipients.end(), FastRandomContext());
 
@@ -409,7 +415,7 @@ UniValue SendMoney(CWallet* const pwallet, const CCoinControl &coin_control, std
     bilingual_str error;
     CTransactionRef tx;
     FeeCalculation fee_calc_out;
-    bool fCreated = pwallet->CreateTransaction(recipients, tx, nFeeRequired, nChangePosRet, error, coin_control, fee_calc_out, !pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
+    const bool fCreated = pwallet->CreateTransaction(recipients, tx, nFeeRequired, nChangePosRet, error, coin_control, fee_calc_out, true);
     if (!fCreated) {
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, error.original);
     }