Perf: ensure no double execution of canonical blocks

[mempirate]

Description

In the current reth node implementation, we (probably) execute blocks twice. Once when op-reth processes regular OP blocks, but also in the unsealed block driver, where we execute frags in memory. We should theoretically defer executing canonical blocks in op-reth and only do it when the new block hash does not match the unsealed block hash. If they do, we should just commit cached state straight to the database instead.