Chain with Rollup-boost does not advance

[ferranbt]

After the new changes in the spec, I am using this network-params.yaml file with Rollup-boost enabled but the chain does not advance.

optimism_package:
  observability:
    enabled: true
  chains:
    chain-a:
      participants:
        node0:
          el:
            type: op-geth
          el_builder:
            type: op-reth
            image: "ghcr.io/paradigmxyz/op-reth:nightly"
          cl_builder:
            type: op-node
          mev_params:
            enabled: true  # Need to enable MEV to use rollup-boost
            image: "flashbots/rollup-boost:develop"
            type: "rollup-boost"
      network_params:
        network: "kurtosis"
        fund_dev_accounts: true
        seconds_per_slot: 2
        fjord_time_offset: 0
        granite_time_offset: 0
        isthmus_time_offset: 5
ethereum_package:
  participants:
  - el_type: geth
    cl_type: teku
  network_params:
    preset: minimal
    genesis_delay: 5
    additional_preloaded_contracts: '
      {
        "0x4e59b44847b379578588920cA78FbF26c0B4956C": {
          "balance": "0ETH",
          "code": "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe03601600081602082378035828234f58015156039578182fd5b8082525050506014600cf3",
          "storage": {},
          "nonce": "1"
        }
      }
    '