produce Elctra attestations when running tests (#6383)

Test blocks don't include Electra attestations currently so finality
breaks and tests fail if prolonged. Fix that.

tests/testblockutil.nim

@@ -611,11 +611,17 @@ iterator makeTestBlocks*(
     let
       parent_root = withState(state[]): forkyState.latest_block_root
       attestations =
-        if attested:
+        if attested and state.kind < ConsensusFork.Electra:
           makeFullAttestations(
             state[], parent_root, getStateField(state[], slot), cache)
         else:
           @[]
+      electraAttestations =
+        if attested and state.kind >= ConsensusFork.Electra:
+          makeFullElectraAttestations(
+            state[], parent_root, getStateField(state[], slot), cache)
+        else:
+          @[]
       stateEth1 = getStateField(state[], eth1_data)
       stateDepositIndex = getStateField(state[], eth1_deposit_index)
       deposits =
@@ -633,6 +639,7 @@ iterator makeTestBlocks*(
       state[], cache,
       eth1_data = eth1_data,
       attestations = attestations,
+      electraAttestations = electraAttestations,
       deposits = deposits,
       sync_aggregate = sync_aggregate,
       graffiti = graffiti,