values smaller than 0.001 sat/B can't be represented by CFeeRate, but they are not rejected.

```
./src/bitcoin-cli -named sendtoaddress address=bcrt1qwkmhqum095zau5rf2velq55cq938vrd7uw8m4r amount=1.23 fee_rate=0.0009

error code: -6
error message:
Fee rate (0.000 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)
```

```
./src/bitcoin-cli -named sendtoaddress address=bcrt1qwkmhqum095zau5rf2velq55cq938vrd7uw8m4r amount=1.23 fee_rate=0.000000000009

error code: -3
error message:
Invalid amount

pwallet->SetAddressBook(dest, label, "send");
    
    std::unique_ptr<Descriptor> descriptor = InferDescriptor(GetScriptForDestination(dest), spk_man);
    UniValue result(UniValue::VOBJ);
    result.pushKV("address", EncodeDestination(dest));
    result.pushKV("redeemScript", HexStr(inner));
    result.pushKV("descriptor", descriptor->ToString());
    return result;
},
    };
}
struct tallyitem
{
    CAmount nAmount{0};
    int nConf{std::numeric_limits<int>::max()};
    std::vector<uint256> txids;
    bool fIsWatchonly{false};
    tallyitem()
    {
    }
};
static UniValue ListReceived(const CWallet& wallet, const UniValue& params, bool by_label) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
{
    
    int nMinDepth = 1;
    if (!params[0].isNull())
        nMinDepth = params[0].get_int();
    
    bool fIncludeEmpty = false;
    if (!params[1].isNull())