Demo fuzz failure: graymatter → jampy (full)

[github-actions]

cc @dakk

The demo graymatter fuzz source test against jampy with spec full failed.

Run: https://github.com/FluffyLabs/jam-testing/actions/runs/25575466261

Please investigate and close this issue once resolved.

[dakk]

Are you sure that the graymatter fuzzer is using correct full spec constants? It is sending 2 work_reports instead of 341 (equation 11.1)