Divma
1219da9a45
## Issue Addressed Part of #3118, continuation of #3257 ## Proposed Changes - the [ `first_success_without_retry` ](https://github.com/sigp/lighthouse/blob/9c429d0764ed91cf56efb8a47a35a556b54a86a4/beacon_node/execution_layer/src/engines.rs#L348-L351) function returns a single error. - the [`first_success`](https://github.com/sigp/lighthouse/blob/9c429d0764ed91cf56efb8a47a35a556b54a86a4/beacon_node/execution_layer/src/engines.rs#L324) function returns a single error. - [ `EngineErrors` ](https://github.com/sigp/lighthouse/blob/9c429d0764ed91cf56efb8a47a35a556b54a86a4/beacon_node/execution_layer/src/lib.rs#L69) carries a single error. - [`EngineError`](https://github.com/sigp/lighthouse/blob/9c429d0764ed91cf56efb8a47a35a556b54a86a4/beacon_node/execution_layer/src/engines.rs#L173-L177) now does not need to carry an Id - [`process_multiple_payload_statuses`](https://github.com/sigp/lighthouse/blob/9c429d0764ed91cf56efb8a47a35a556b54a86a4/beacon_node/execution_layer/src/payload_status.rs#L46-L50) now doesn't need to receive an iterator of statuses and weight in different errors ## Additional Info This is built on top of #3294