`nrpc` keeps sending blocks when el responds INVALID
due to a corrupted database, my nimbus-eth1 was responding `INVALID` to all requests.

`nrpc` however just happily kept trying to build on them - instead, it should stop:

```
INF 2024-10-28 19:01:20.241+01:00 newPayload Request sent                    blockNumber=2571310 response=INVALID
INF 2024-10-28 19:01:20.300+01:00 newPayload Request sent                    blockNumber=2571311 response=INVALID
INF 2024-10-28 19:01:20.350+01:00 newPayload Request sent                    blockNumber=2571312 response=INVALID
INF 2024-10-28 19:01:20.379+01:00 newPayload Request sent                    blockNumber=2571313 response=INVALID
INF 2024-10-28 19:01:20.404+01:00 newPayload Request sent                    blockNumber=2571314 response=INVALID
INF 2024-10-28 19:01:20.428+01:00 newPayload Request sent                    blockNumber=2571315 response=INVALID
INF 2024-10-28 19:01:20.450+01:00 newPayload Request sent                    blockNumber=2571316 response=INVALID
INF 2024-10-28 19:01:20.480+01:00 newPayload Request sent                    blockNumber=2571317 response=INVALID
INF 2024-10-28 19:01:20.509+01:00 newPayload Request sent                    blockNumber=2571318 response=INVALID
INF 2024-10-28 19:01:20.535+01:00 newPayload Request sent                    blockNumber=2571319 response=INVALID
INF 2024-10-28 19:01:20.554+01:00 newPayload Request sent                    blockNumber=2571320 response=INVALID
INF 2024-10-28 19:01:20.573+01:00 newPayload Request sent                    blockNumber=2571321 response=INVALID
INF 2024-10-28 19:01:20.596+01:00 newPayload Request sent                    blockNumber=2571322 response=INVALID
INF 2024-10-28 19:01:20.622+01:00 newPayload Request sent                    blockNumber=2571323 response=INVALID
INF 2024-10-28 19:01:20.640+01:00 newPayload Request sent                    blockNumber=2571324 response=INVALID
INF 2024-10-28 19:01:20.660+01:00 newPayload Request sent                    blockNumber=2571325 response=INVALID
INF 2024-10-28 19:01:20.677+01:00 newPayload Request sent                    blockNumber=2571326 response=INVALID
INF 2024-10-28 19:01:20.693+01:00 newPayload Request sent                    blockNumber=2571327 response=INVALID
INF 2024-10-28 19:01:20.714+01:00 newPayload Request sent                    blockNumber=2571328 response=INVALID
INF 2024-10-28 19:01:20.715+01:00 forkchoiceUpdated Request sent             response=INVALID
INF 2024-10-28 19:01:20.739+01:00 newPayload Request sent                    blockNumber=2571329 response=INVALID
INF 2024-10-28 19:01:20.757+01:00 newPayload Request sent                    blockNumber=2571330 response=INVALID
INF 2024-10-28 19:01:20.931+01:00 newPayload Request sent                    blockNumber=2571331 response=INVALID
INF 2024-10-28 19:01:21.087+01:00 newPayload Request sent                    blockNumber=2571332 response=INVALID
INF 2024-10-28 19:01:21.221+01:00 newPayload Request sent                    blockNumber=2571333 response=INVALID
```

...