Uncouple blob limits per block across CL and EL

[zilm13]

PR: ethereum/consensus-specs#3800
EIP: https://eips.ethereum.org/EIPS/eip-7742
Wait for merge and implement
Plus we don't need this until we have at least 1 EL which supports this

[lucassaldanha]

Could probably close this one in favour of Consensys#8745

[zilm13]

yeah I see it's delayed, closing this one, it's easier to open new one when EIP-7742 is closer to the production