## Proposed Changes
Update `superstruct` to bring in @realbigsean's fixes necessary for MEV-compatible private beacon block types (a la #2795).
The refactoring is due to another change in superstruct that allows partial getters to be auto-generated.
## Issue Addressed
N/A
## Proposed Changes
We are currently treating errors from the EL on `engine_executePayload` as `PayloadVerificationStatus::NotVerified`. This adds the block as a candidate head block in fork choice even if the EL explicitly rejected the block as invalid.
`PayloadVerificationStatus::NotVerified` should be only returned when the EL explicitly returns "syncing" imo. This PR propagates an error instead of returning `NotVerified` on EL all EL errors.
## Issue Addressed
N/A
## Proposed Changes
Changes required for the `merge-devnet-3`. Added some more non substantive renames on top of @realbigsean 's commit.
Note: this doesn't include the proposer boosting changes in kintsugi v3.
This devnet isn't running with the proposer boosting fork choice changes so if we are looking to merge https://github.com/sigp/lighthouse/pull/2822 into `unstable`, then I think we should just maintain this branch for the devnet temporarily.
Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
