Deneb pr updates 2 (#4851)

* use workspace deps in kzg crate

* delete unused blobs dp path field

* full match on fork name in engine api get payload v3

* only accept v3 payloads on get payload v3 endpoint in mock el

* remove FIXMEs related to merge transition tests

* move static tx to test utils

* default max_per_epoch_activation_churn_limit to mainnet value

* remove unnecessary async

* remove comment

* use task executor in `blob_sidecars` endpoint

beacon_node/http_api/src/publish_blocks.rs

@@ -75,8 +75,7 @@ pub async fn publish_block<T: BeaconChainTypes, B: IntoGossipVerifiedBlockConten
             .unwrap_or_else(|| Duration::from_secs(0));
 
         info!(log, "Signed block published to network via HTTP API"; "slot" => block.slot(), "publish_delay" => ?publish_delay);
-        // Send the block, regardless of whether or not it is valid. The API
-        // specification is very clear that this is the desired behaviour.
+
         match block.as_ref() {
             SignedBeaconBlock::Base(_)
             | SignedBeaconBlock::Altair(_)