While regtesting with [bitcoin-spock](https://github.com/msgilligan/bitcoin-spock) I noticed at some point the transaction creation via `sendtoaddress -> CreateTransaction()` fails, because the created transaction is larger than `MAX_STANDARD_TX_SIZE`.

During the process a lot of raw transactions are created, which have smallish outputs and when then using `sendtoaddress`, it appears to attempt to create a transaction that spends too many of those dust-ish outputs.

The transaction to create does not have many outputs, but it looks like it's caused by the coin selection, which selects too many inputs. Testing was done with a 0.9 branch, but on the first glimpse I believe this issue is as well be present in 0.10. If this is a known issue, and if there is already a guard against this behavior, I'd be happy about a hint.

Sorry in advance, I do not have a test script to reproduce this issue in an isolated manner. A potential fix would probably require to adjust the coin selection, so that it selects a combination of coins, which, in addition to the size of the rest of the transaction, is still smaller than the limit.

}
        txNew.vout.push_back(txout);
    }
    
    const CAmount not_input_fees = coin_selection_params.m_effective_feerate.GetFee(coin_selection_params.tx_noinputs_size);
    CAmount selection_target = recipients_sum + not_input_fees;
    
    PreSelectedInputs preset_inputs;
    if (coin_control.HasSelected()) {
        auto res_fetch_inputs = FetchSelectedInputs(wallet, coin_control, coin_selection_params);
        if (!res_fetch_inputs) return util::Error{util::ErrorString(res_fetch_inputs)};
        preset_inputs = *res_fetch_inputs;
    }
    
    
    CoinsResult available_coins;
    if (coin_control.m_allow_other_inputs) {
        available_coins = AvailableCoins(wallet, &coin_control, coin_selection_params.m_effective_feerate);
    }
    
    std::optional<SelectionResult> result = SelectCoins(wallet, available_coins, preset_inputs, selection_target, coin_control, coin_selection_params);
    if (!result) {
        return util::Error{_("Insufficient funds")};
    }
    TRACE5(coin_selection, selected_coins, wallet.GetName().c_str(), GetAlgorithmName(result->GetAlgo()).c_str(), result->GetTarget(), result->GetWaste(), result->GetSelectedValue());
    const CAmount change_amount = result->GetChange(coin_selection_params.min_viable_change, coin_selection_params.m_change_fee);
    if (change_amount > 0) {
        CTxOut newTxOut(change_amount, scriptChange);
        if (nChangePosInOut == -1) {