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`
LOCK(data.watchonly_->cs_);
                    if (data.watchonly_->IsMine(addr_pair.first)) {
                        // Add to th
                        stdstring label = addr_pair.second.GetLabel();
                        stdstring purpose = addr_pair.second.purpose;
                        if (!purpose.empty()) {
                            data.watchonly_->m_address_book[addr_pair.first].purpose = purpose;
                        }
                        if (!addr_pair.second.IsChange()) {
                            data.watchonly_->m_address_book[addr_pair.first].SetLabel(label);
                        }
                        dests_to_delete.push_back(addr_pair.first);
                        continue;
                    }
                }
                if (data.solvable_) {
                    LOCK(data.solvable_->cs_);
                    if (data.solvable_->IsMine(addr_pair.first)) {
                        // Add to th
                        stdstring label = addr_pair.second.GetLabel();
                        stdstring purpose = addr_pair.second.purpose;
                        if (!purpose.empty()) {
                            data.solvable_->m_address_book[addr_pair.first].purpose = purpose;
                        }
                        if (!addr_pair.second.IsChange()) {
                            data.solvable_->m_address_book[addr_pair.first].SetLabel(label);
                        }
                        dests_to_delete.push_back(addr_pair.first);
                        continue;
                    }