addmultisigaddress creates an address respecting the setting, being unable to generate a specific type of address without also adding it to the wallet seems wrong.

I suppose in the future `addresstype` may be refactored to be wallet-specific, which would leave this non-wallet rpc call without an argument. Perhaps there should just be an optional parameter to set it.
{
    
    if (change_type != OutputType::CHANGE_AUTO) {
        return change_type;
    }
    
    
    if (m_default_address_type == OutputType::LEGACY) {
        return OutputType::LEGACY;
    }
    
    
    for (const auto& recipient : vecSend) {
        
        int witnessversion = 0;
        std::vector<unsigned char> witnessprogram;
        if (recipient.scriptPubKey.IsWitnessProgram(witnessversion, witnessprogram)) {
            return OutputType::BECH32;
        }
    }
    
    return m_default_address_type;
}
bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CReserveKey& reservekey, CAmount& nFeeRet,