* op-program: Implement consolidation for interop

* address todos; fix claim validation bug

* fix test

* fix todos

* op-program: Fix short-circuit logic in block walk

* op-program: Use l2-chain block fetcher in canon

* op-program: Fix current header in engine_backend

* op-program: Filter hazardrous exec msgs

* cleanup

* fix block cache lookup

* snap to earliest block and update tests
Co-authored-by: Adrian Sutton <adrian@oplabs.co>

* use adrian's suggestion

* todo formatting

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Co-authored-by: Adrian Sutton <adrian@oplabs.co>