chore(sdk): Add NodePrimitives::BlockHeader and NodePrimitives::BlockBody

[emhane]

Based on #12683

Ref #12358

[mattsse]

hmm, why do we need this if the header and body type are already defined in the block type?

[emhane]

hmm, why do we need this if the header and body type are already defined in the block type?

it makes it a lot easier to access the header type...one could argue the same about signed transaction too otherwise

[mattsse]

I suspect this would make things harder when enforcing bounds because then we need to restrict Header to Block::Header.

don't think we should do this

[emhane]

I suspect this would make things harder when enforcing bounds because then we need to restrict Header to Block::Header.

don't think we should do this

we have the same problem with signed tx, must be restricted to Self::Block: Block<Body: Body<Transaction: Self::SignedTx>>

@mattsse

[emhane]

I don't see why this is a problem when NetworkPrimitives does this exactly...

[emhane]

can't figure out what's wrong with the features here https://github.com/paradigmxyz/reth/actions/runs/11921032967/job/33224297145?pr=12647