Use MAX_BLOBS_PER_BLOCK from config in state transition (#6959)

Start phasing out the compile-time `MAX_BLOBS_PER_BLOCK` and use the
value from the network config in state transition instead.

Author: etan-status

beacon_chain/spec/state_transition_block.nim

@@ -957,7 +957,8 @@ type SomeDenebBeaconBlockBody =
 
 # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/deneb/beacon-chain.md#process_execution_payload
 proc process_execution_payload*(
-    state: var deneb.BeaconState, body: SomeDenebBeaconBlockBody,
+    cfg: RuntimeConfig, state: var deneb.BeaconState,
+    body: SomeDenebBeaconBlockBody,
     notify_new_payload: deneb.ExecutePayload): Result[void, cstring] =
   template payload: auto = body.execution_payload
 
@@ -976,7 +977,7 @@ proc process_execution_payload*(
     return err("process_execution_payload: invalid timestamp")
 
   # [New in Deneb] Verify commitments are under limit
-  if not (lenu64(body.blob_kzg_commitments) <= MAX_BLOBS_PER_BLOCK):
+  if not (lenu64(body.blob_kzg_commitments) <= cfg.MAX_BLOBS_PER_BLOCK):
     return err("process_execution_payload: too many KZG commitments")
 
   # Verify the execution payload is valid
@@ -1329,7 +1330,7 @@ proc process_block*(
   if is_execution_enabled(state, blck.body):
     ? process_withdrawals(state, blck.body.execution_payload)
     ? process_execution_payload(
-        state, blck.body,
+        cfg, state, blck.body,
         func(_: deneb.ExecutionPayload): bool = true)  # [Modified in Deneb]
   ? process_randao(state, blck.body, flags, cache)
   ? process_eth1_data(state, blck.body)

tests/consensus_spec/deneb/test_fixture_operations.nim

@@ -175,7 +175,8 @@ suite baseDescription & "Execution Payload " & preset():
             preState.latest_block_root(
               assignClone(preState)[].hash_tree_root())))
       func executePayload(_: deneb.ExecutionPayload): bool = payloadValid
-      process_execution_payload(preState, body, executePayload)
+      process_execution_payload(
+        defaultRuntimeConfig, preState, body, executePayload)
 
   for path in walkTests(OpExecutionPayloadDir):
     let applyExecutionPayload = makeApplyExecutionPayloadCb(path)