deneb related logging improvements (#4859)

1. Add commitments to logs and update the `Display` implementation of `KzgCommitment` to become truncated similarly to block root.

I've been finding it difficult to debug scenarios involving multiple blobs for the same `(index, block_root)`. Logging the commitment will help with this, we can match it to what exists in the block. 

Example output:

```
Oct 20 21:13:36.700 DEBG Successfully verified gossip blob       commitment: 0xa3c1…1cd8, index: 0, root: 0xf31e…f9de, slot: 154568
Oct 20 21:13:36.785 DEBG Successfully verified gossip block      commitments: [0xa3c1…1cd8, 0x8655…02ff, 0x8d6a…955a, 0x84ac…3a1b, 0x9752…629b, 0xb9fc…20fb], root: 0xf31eeb732702e429e89057b15e1c0c631e8452e09e03cb1924353f536ef4f9de, slot: 154568, graffiti: teku/besu, service: beacon
```

Example output in a block with no blobs (this will show up pre-deneb):
```
426734:Oct 20 21:15:24.113 DEBG Successfully verified gossip block, commitments: [], root: 0x619db1360ba0e8d44ae2a0f2450ebca47e167191feecffcfac0e8d7b6c39623c, slot: 154577, graffiti: teku/nethermind, service: beacon, module: beacon_chain::beacon_chain:2765
```

2. Remove `strum::IntoStaticStr` from `AvailabilityCheckError`. This is because `IntoStaticStr` end up dropping information inside the enum. So kzg commitments in this error are dropped, making it more difficult to debug
```
AvailabilityCheckError::KzgCommitmentMismatch {
        blob_commitment: KzgCommitment,
        block_commitment: KzgCommitment,
    },
```
which is output as just `AvailabilityCheckError`

3. Some additional misc sync logs I found useful in debugging https://github.com/sigp/lighthouse/pull/4869

4. This downgrades ”Block returned for single block lookup not present” to debug because I don’t think we can fix the scenario that causes this unless we can cancel inflight rpc requests

Co-authored-by: realbigsean <seananderson33@gmail.com>

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -2761,12 +2761,14 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
 
                     match GossipVerifiedBlock::new(block, &chain) {
                         Ok(verified) => {
+                            let commitments_formatted = verified.block.commitments_formatted();
                             debug!(
                                 chain.log,
                                 "Successfully verified gossip block";
                                 "graffiti" => graffiti_string,
                                 "slot" => slot,
                                 "root" => ?verified.block_root(),
+                                "commitments" => commitments_formatted,
                             );
 
                             Ok(verified)

beacon_node/beacon_chain/src/block_verification_types.rs

@@ -38,6 +38,13 @@ impl<E: EthSpec> RpcBlock<E> {
     pub fn block_root(&self) -> Hash256 {
         self.block_root
     }
+
+    pub fn as_block(&self) -> &SignedBeaconBlock<E> {
+        match &self.block {
+            RpcBlockInner::Block(block) => block,
+            RpcBlockInner::BlockAndBlobs(block, _) => block,
+        }
+    }
 }
 
 /// Note: This variant is intentionally private because we want to safely construct the

beacon_node/beacon_chain/src/data_availability_checker/error.rs

@@ -1,8 +1,7 @@
 use kzg::{Error as KzgError, KzgCommitment};
-use strum::IntoStaticStr;
 use types::{BeaconStateError, Hash256};
 
-#[derive(Debug, IntoStaticStr)]
+#[derive(Debug)]
 pub enum Error {
     Kzg(KzgError),
     KzgNotInitialized,