Add missing event in PendingComponent span and clean up sync logs (#8033)

I was looking into some long `PendingComponents` span and noticed the block event wasn't added to the span, so it wasn't possible to see when the block was added from the trace view, this PR fixes this.

<img width="637" height="430" alt="image" src="https://github.com/user-attachments/assets/65040b1c-11e7-43ac-951b-bdfb34b665fb" />

Additionally I've noticed a lot of noises and confusion in sync logs due to the initial`peer_id` being included as part of the syncing chain span, causing all logs under the span to have that `peer_id`, which may not be accurate for some sync logs, I've removed `peer_id` from the `SyncingChain` span, and also cleaned up a bunch of spans to use `%` (display) for slots and epochs to make logs easier to read.


  


Co-Authored-By: Jimmy Chen <jchen.tc@gmail.com>

beacon_node/beacon_chain/src/block_verification.rs

@@ -2061,7 +2061,7 @@ impl BlockBlobError for GossipDataColumnError {
 /// and `Cow::Borrowed(state)` will be returned. Otherwise, the state will be cloned, cheaply
 /// advanced and then returned as a `Cow::Owned`. The end result is that the given `state` is never
 /// mutated to be invalid (in fact, it is never changed beyond a simple committee cache build).
-#[instrument(skip(state, spec), level = "debug")]
+#[instrument(skip_all, fields(?state_root_opt, %block_slot), level = "debug")]
 pub fn cheap_state_advance_to_obtain_committees<'a, E: EthSpec, Err: BlockBlobError>(
     state: &'a mut BeaconState<E>,
     state_root_opt: Option<Hash256>,