Steps:
1. Send transaction (A) to a different wallet
2. Using the change, create another transaction (B) to a different wallet
3. `abandontransaction` B
4. `bumpfee` A fails with `Transaction has descendants in the wallet`
// Helper for producing a bunch of max-sized low-S low-R signatures (eg 71 bytes)
bool CWalletDummySignTx(CMutableTransaction &txNew, const stdvector<CTxOut> &txouts, const CCoinControl* coin_control) const
{
    // F
    int nIn = 0;
    for (const auto& txout  txouts)
    {
        CTxIn& txin = txNew.vin[nIn];
        // I
        if (coin_control && coin_control->HasInputWeight(txin.prevout)) {
            if (!FillInputToWeight(txin, coin_control->GetInputWeight(txin.prevout))) {
                return false;
            }
            nIn++;
            continue;
        }
        const stdunique_ptr<SigningProvider> provider = GetSolvingProvider(txout.scriptPubKey);
        if (!provider || !DummySignInput(*provider, txin, txout, coin_control)) {
            if (!coin_control || !DummySignInput(coin_control->m_external_provider, txin, txout, coin_control)) {
                return false;
            }
        }
        nIn++;
    }
    return true;
}
bool CWalletImportScripts(const stdset<CScript> scripts, int64_t timestamp)
{
    auto spk_man = GetLegacyScriptPubKeyMan();
    if (!spk_man) {