chore(sdk): use generic types in BlockchainProvider impl bodies

[emhane]

Generalises data primitives that are now possible in BlockchainProvider impl bodies

[klkvr]

those were kept as is intentionally because we enforce EthPrimitives in TreeNodeTypes

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

Lines 110 to 117 in 3d5b165

	pub trait NodeTypesForTree:
	NodeTypesForProvider<Primitives = EthPrimitives> + NodeTypesWithEngine
	{
	}
	impl<T> NodeTypesForTree for T where
	T: NodeTypesForProvider<Primitives = EthPrimitives> + NodeTypesWithEngine
	{
	}

we're not planning to abstract legacy engine and BlockchainProvider