Try to fix bug in StartNewOCRRound()

It calls WaitForEvents(), but I'm not sure whether that might just be
waiting for the next block header.Calling ocrContract.Wait() explicitly
to make sure it waits for the round to be fully completed and confirmed

integration-tests/actions/ocr2_helpers.go

@@ -22,6 +22,7 @@ import (
 
 	"github.com/smartcontractkit/chainlink-testing-framework/blockchain"
 	ctfClient "github.com/smartcontractkit/chainlink-testing-framework/client"
+
 	"github.com/smartcontractkit/chainlink/v2/core/services/job"
 	"github.com/smartcontractkit/chainlink/v2/core/services/keystore/chaintype"
 	"github.com/smartcontractkit/chainlink/v2/core/services/ocr2/testhelpers"
@@ -383,9 +384,16 @@ func StartNewOCR2Round(
 		}
 		ocrRound := contracts.NewOffchainAggregatorV2RoundConfirmer(ocrInstances[i], big.NewInt(roundNumber), timeout, logger)
 		client.AddHeaderEventSubscription(ocrInstances[i].Address(), ocrRound)
-		err = client.WaitForEvents()
+		//err = client.WaitForEvents()
+		//if err != nil {
+		//	return fmt.Errorf("failed to wait for event subscriptions of OCR instance %d: %w", i+1, err)
+		//}
+		err = ocrRound.Wait() // wait for OCR Round to complete
 		if err != nil {
-			return fmt.Errorf("failed to wait for event subscriptions of OCR instance %d: %w", i+1, err)
+			return fmt.Errorf("failed to wait for OCR Round %d to complete", roundNumber, i)
+		}
+		if !ocrRound.Complete() {
+			return fmt.Errorf("failed to complete OCR Round %d for ocr instance %d", roundNumber, i)
 		}
 	}
 	return nil