eth/catalyst: make engine api test time independent

eth/catalyst/api_test.go

@@ -208,7 +208,6 @@ func TestEth2PrepareAndGetPayload(t *testing.T) {
 		t.Fatalf("error preparing payload, err=%v", err)
 	}
 	// give the payload some time to be built
-	time.Sleep(100 * time.Millisecond)
 	payloadID := (&miner.BuildPayloadArgs{
 		Parent:       fcState.HeadBlockHash,
 		Timestamp:    blockParams.Timestamp,
@@ -217,12 +216,12 @@ func TestEth2PrepareAndGetPayload(t *testing.T) {
 		BeaconRoot:   blockParams.BeaconRoot,
 		Version:      engine.PayloadV1,
 	}).Id()
-	execData, err := api.GetPayloadV1(payloadID)
+	execData, err := api.getPayload(payloadID, true)
 	if err != nil {
 		t.Fatalf("error getting payload, err=%v", err)
 	}
-	if len(execData.Transactions) != blocks[9].Transactions().Len() {
-		t.Fatalf("invalid number of transactions %d != 1", len(execData.Transactions))
+	if len(execData.ExecutionPayload.Transactions) != blocks[9].Transactions().Len() {
+		t.Fatalf("invalid number of transactions %d != 1", len(execData.ExecutionPayload.Transactions))
 	}
 	// Test invalid payloadID
 	var invPayload engine.PayloadID