Remove consensus/types re-exports (#8540)

There are certain crates which we re-export within `types` which creates a fragmented DevEx, where there are various ways to import the same crates.

```rust
// consensus/types/src/lib.rs
pub use bls::{
AggregatePublicKey, AggregateSignature, Error as BlsError, Keypair, PUBLIC_KEY_BYTES_LEN,
PublicKey, PublicKeyBytes, SIGNATURE_BYTES_LEN, SecretKey, Signature, SignatureBytes,
get_withdrawal_credentials,
};
pub use context_deserialize::{ContextDeserialize, context_deserialize};
pub use fixed_bytes::FixedBytesExtended;
pub use milhouse::{self, List, Vector};
pub use ssz_types::{BitList, BitVector, FixedVector, VariableList, typenum, typenum::Unsigned};
pub use superstruct::superstruct;
```

This PR removes these re-exports and makes it explicit that these types are imported from a non-`consensus/types` crate.


Co-Authored-By: Mac L <mjladson@pm.me>

consensus/state_processing/src/upgrade/altair.rs

@@ -2,11 +2,12 @@ use crate::common::update_progressive_balances_cache::initialize_progressive_bal
 use crate::common::{
     attesting_indices_base::get_attesting_indices, get_attestation_participation_flag_indices,
 };
+use milhouse::List;
 use std::mem;
 use std::sync::Arc;
 use types::{
     BeaconState, BeaconStateAltair, BeaconStateError as Error, ChainSpec, EpochCache, EthSpec,
-    Fork, List, ParticipationFlags, PendingAttestation, RelativeEpoch, SyncCommittee,
+    Fork, ParticipationFlags, PendingAttestation, RelativeEpoch, SyncCommittee,
 };
 
 /// Translate the participation information from the epoch prior to the fork into Altair's format.

consensus/state_processing/src/upgrade/capella.rs

@@ -1,7 +1,8 @@
+use milhouse::List;
 use std::mem;
 use types::{
     BeaconState, BeaconStateCapella, BeaconStateError as Error, ChainSpec, EpochCache, EthSpec,
-    Fork, List,
+    Fork,
 };
 
 /// Transform a `Bellatrix` state into an `Capella` state.

consensus/state_processing/src/upgrade/fulu.rs

@@ -1,8 +1,7 @@
+use milhouse::Vector;
 use safe_arith::SafeArith;
 use std::mem;
-use types::{
-    BeaconState, BeaconStateError as Error, BeaconStateFulu, ChainSpec, EthSpec, Fork, Vector,
-};
+use types::{BeaconState, BeaconStateError as Error, BeaconStateFulu, ChainSpec, EthSpec, Fork};
 
 /// Transform a `Electra` state into an `Fulu` state.
 pub fn upgrade_to_fulu<E: EthSpec>(