chore: simplify getting exception name (kyverno#9916)

Signed-off-by: Charles-Edouard Brétéché <[email protected]>

pkg/engine/exceptions.go

@@ -1,8 +1,6 @@
 package engine
 
 import (
-	"fmt"
-
 	kyvernov1 "github.com/kyverno/kyverno/api/kyverno/v1"
 	kyvernov2beta1 "github.com/kyverno/kyverno/api/kyverno/v2beta1"
 	"k8s.io/apimachinery/pkg/labels"
@@ -22,10 +20,7 @@ func (e *engine) GetPolicyExceptions(
 	if err != nil {
 		return exceptions, err
 	}
-	policyName, err := cache.MetaNamespaceKeyFunc(policy)
-	if err != nil {
-		return exceptions, fmt.Errorf("failed to compute policy key: %w", err)
-	}
+	policyName := cache.MetaObjectToName(policy).String()
 	for _, polex := range polexs {
 		if polex.Contains(policyName, rule) {
 			exceptions = append(exceptions, *polex)