Registration timestamp before genesis causes fatal crash in Charon

[boulder225]

🎯 Problem to be solved

Charon crashes when splitting keys with v0.19.2 and running the cluster with the new lock and keys, but this does not happen with v0.19.0.

set": "stable", "feature-set-disable": "[]", "feature-set-enable": "[]", "help": "false", "jaeger-address": "", "jaeger-service": "node0", "lock-file": "/opt/charon/.charon/cluster/node0/cluster-lock.json", "log-color": "auto", "log-format": "console", "log-level": "debug", "log-output-path": "", "loki-addresses": "[]", "loki-service": "charon", "manifest-file": ".charon/cluster-manifest.pb", "monitoring-address": "0.0.0.0:3620", "no-verify": "false", "p2p-disable-reuseport": "false", "p2p-external-hostname": "node0", "p2p-external-ip": "", "p2p-relays": "[https://0.relay.obol.tech]", "p2p-tcp-address": "[0.0.0.0:3610]", "private-key-file": "/opt/charon/.charon/cluster/node0/charon-enr-private-key", "private-key-file-lock": "false", "simnet-beacon-mock": "false", "simnet-beacon-mock-fuzz": "false", "simnet-slot-duration": "1s", "simnet-validator-keys-dir": ".charon/validator_keys", "simnet-validator-mock": "false", "synthetic-block-proposals": "false", "testnet-chain-id": "3151908", "testnet-fork-version": "0x10000038", "testnet-genesis-timestamp": "1711629991", "testnet-name": "testnet", "validator-api-address": "0.0.0.0:3600"}
2024-03-28 18:16:36 12:46:36.866 INFO app-start  Charon starting                          {"version": "v0.19.2", "git_commit_hash": "53e044c", "git_commit_time": "2024-03-05T13:37:23Z"}
2024-03-28 18:16:37 12:46:37.745 INFO app-start  Resolved new relay                       {"peer": "dazzling-mirror", "url": "https://0.relay.obol.tech", "addrs": "[/ip4/34.141.223.64/tcp/3610]"}
2024-03-28 18:16:38 12:46:38.020 INFO app-start  Lock file loaded                         {"peer_name": "misty-ring", "peer_index": 0, "cluster_hash": "6c8c1ec", "cluster_name": "test", "peers": 3}
2024-03-28 18:16:38 12:46:38.027 ERRO cmd        Fatal error: wire recaster: calculate slot from timestamp: registration timestamp before genesis
2024-03-28 18:16:38     app/app.go:1052 .slotFromTimestamp
2024-03-28 18:16:38     app/app.go:633 .newRecaster
2024-03-28 18:16:38     app/app.go:489 .wireCoreWorkflow
2024-03-28 18:16:38     app/app.go:266 .Run
2024-03-28 18:16:38     cmd/run.go:37 .func1
2024-03-28 18:16:38     cmd/cmd.go:80 .func1
2024-03-28 18:16:38     main.go:19 .main

This is probably related to #2810 since the genesis timestamp must be greater or equal to the timestamp at which splitting the keys. This happened because it was a genesis testnet and won't happen in kurtosis tests.

🛠️ Proposed solution

• Relax the check that fails when registration timestamp is before genesis
• Instead of fatal crash, log a warning and continue
• Consider allowing registration timestamp to be before genesis in certain cases