Gossip message was ignored

[nalepae]

Describe the bug

Using the following Kurtosis configuration:

participants:
  # Super-nodes
  - el_type: geth
    el_image: ethpandaops/geth:fusaka-devnet-3
    cl_type: prysm
    vc_image: prysm-vc-custom-image:latest
    cl_image: prysm-bn-custom-image:latest
    count: 2
    supernode: true
    cl_extra_params:
      - --subscribe-all-subnets
    vc_extra_params:
      - --verbosity=debug
  # Full-nodes
  - el_type: geth
    el_image: ethpandaops/geth:fusaka-devnet-3
    cl_type: prysm
    vc_image: prysm-vc-custom-image:latest
    cl_image: prysm-bn-custom-image:latest
    count: 2
    cl_extra_params:
      - --subscribe-all-subnets
    vc_extra_params:
      - --verbosity=debug

additional_services:
  - dora
  - spamoor

spamoor_params:
  image: ethpandaops/spamoor:master
  max_mem: 4000
  spammers:
    - scenario: eoatx
      config:
        throughput: 200
    - scenario: blobs
      config:
        throughput: 20

network_params:
  fulu_fork_epoch: 0
  bpo_1_epoch: 4
  bpo_1_max_blobs: 72
  bpo_1_target_blobs: 9
  withdrawal_type: "0x02"
  preset: mainnet
  seconds_per_slot: 6

global_log_level: debug

I get a lot of

[2025-10-06 14:17:21.34] DEBUG sync: Gossip message was ignored agent=Prysm/v6.1.0/1f8939472764c5691ca81e99a5b8b6775f82d97e error=not descendant of finalized checkpoint gossipScore=32.72 multiaddress=/ip4/172.16.0.17/udp/13000/quic-v1 peerID=16Uiu2HAkxXuEpqEf4t8mN2KG4JkqKJFKhLVMMcpvfr6K5qpS2HYM topic=/eth2/98301011/beacon_attestation_5/ssz_snappy
[2025-10-06 14:17:21.34] DEBUG sync: Gossip message was ignored agent=Prysm/v6.1.0/1f8939472764c5691ca81e99a5b8b6775f82d97e error=not descendant of finalized checkpoint gossipScore=32.72 multiaddress=/ip4/172.16.0.17/udp/13000/quic-v1 peerID=16Uiu2HAkxXuEpqEf4t8mN2KG4JkqKJFKhLVMMcpvfr6K5qpS2HYM topic=/eth2/98301011/beacon_attestation_5/ssz_snappy
[2025-10-06 14:17:21.34] DEBUG sync: Gossip message was ignored agent=Prysm/v6.1.0/1f8939472764c5691ca81e99a5b8b6775f82d97e error=not descendant of finalized checkpoint gossipScore=32.72 multiaddress=/ip4/172.16.0.17/udp/13000/quic-v1 peerID=16Uiu2HAkxXuEpqEf4t8mN2KG4JkqKJFKhLVMMcpvfr6K5qpS2HYM topic=/eth2/98301011/beacon_attestation_5/ssz_snappy

messages.

Notes:

1. It happens only for attestations
2. It disappears if spamoor is deactivated