Simplify BlockState to (Sealed)BlockWithSenders

[mattsse]

Describe the feature

currently we do this a lot:

reth/crates/storage/provider/src/providers/blockchain_provider.rs

Lines 619 to 621 in 24b6341

	let block = block_state.block().block().clone();
	let senders = block_state.block().senders().clone();
	BlockWithSenders { block: block.unseal(), senders }

we could simplify this with a function on BlockState that is

fn block_with_senders(&self) -> BlockWithSenders

this will require internal clones but this is fine

Additional context

No response

[greged93]

hey Matt I'd like to work on this if possible