I was messing around with min relay policies and found that under certain circumstances the mempool will accept things, then not relay to any peers.

Example made using wallet:
Transaction of size 6195, fee of 619 satoshis, minrelay of 100 satoshis per kvB. Mempool logic allows it:

```
        // No transactions are allowed below minRelayTxFee except from disconnected blocks
        if (!bypass_limits && nModifiedFees < ::minRelayTxFee.GetFee(nSize)) {
            return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "min relay fee not met", false, strprintf("%d < %d", nModifiedFees, ::minRelayTxFee.GetFee(nSize)));
        }
```
and lets it into mempool

but in net_processing.cpp:

```
                    if (filterrate && txinfo.feeRate.GetFeePerK() < filterrate) {
                        continue;
                    }
```
this gets hit because the computed feerate is insufficient(printing I added):
```
0.00000099 BTC/kB
```

I'm not super at arithmetic so I'm opening this up in case someone has an easy fix. 

let me also get a reproducible test failure with this...
switch (state.GetReason()) {
    case ValidationInvalidReason::NONE:
        break;
    
    case ValidationInvalidReason::CONSENSUS:
    case ValidationInvalidReason::BLOCK_MUTATED:
        if (!via_compact_block) {
            LOCK(cs_main);
            Misbehaving(nodeid, 100, message);
            return true;
        }
        break;
    case ValidationInvalidReason::CACHED_INVALID:
        {
            LOCK(cs_main);
            CNodeState *node_state = State(nodeid);
            if (node_state == nullptr) {
                break;
            }
            
            
            if (!via_compact_block && !node_state->m_is_inbound && !node_state->m_is_manual_connection) {
                Misbehaving(nodeid, 100, message);
                return true;
            }
            break;
        }
    case ValidationInvalidReason::BLOCK_INVALID_HEADER:
    case ValidationInvalidReason::BLOCK_CHECKPOINT: