Make BeaconChain::kzg field mandatory (#6267)

* make kzg field required

* update todo

* always load trusted setup WIP

* fmt

* use new rust_eth_kzg version

* merge conlficts

* add kzg fn with trusted setup disabled

* as_slice

* add kzg with no precomp

* ignore udep for kzg

* refactor kzg init

* fix peerdas kzg schedule

* fix

* udeps

* uuuudeps

* merge conflict resolved

* merge conflict

* merge conflicts

* resolve TODO

* update

* move kzg to a test util fn

* remove trusted setup default impl

* lint fmt

* fix failing test

* lint

* fix test

* Merge branch 'unstable' into beacon-chain-kzg-field-required

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -497,7 +497,7 @@ pub struct BeaconChain<T: BeaconChainTypes> {
     /// they are collected and combined.
     pub data_availability_checker: Arc<DataAvailabilityChecker<T>>,
     /// The KZG trusted setup used by this chain.
-    pub kzg: Option<Arc<Kzg>>,
+    pub kzg: Arc<Kzg>,
 }
 
 pub enum BeaconBlockResponseWrapper<E: EthSpec> {
@@ -5682,10 +5682,8 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
 
                 let kzg_proofs = Vec::from(proofs);
 
-                let kzg = self
-                    .kzg
-                    .as_ref()
-                    .ok_or(BlockProductionError::TrustedSetupNotInitialized)?;
+                let kzg = self.kzg.as_ref();
+
                 kzg_utils::validate_blobs::<T::EthSpec>(
                     kzg,
                     expected_kzg_commitments,