refactor(unified-storage): set the GUID in the resource server (#105683)

pkg/storage/unified/testing/search_and_storage.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"testing"
 
+	"github.com/google/uuid"
 	"github.com/stretchr/testify/require"
 
 	claims "github.com/grafana/authlib/types"
@@ -87,6 +88,7 @@ func RunTestSearchAndStorage(t *testing.T, ctx context.Context, backend resource
 				Key:    key,
 				Value:  value,
 				Object: meta,
+				GUID:   uuid.New().String(),
 			})
 			require.NoError(t, err)
 			require.Greater(t, rv, int64(0))

pkg/storage/unified/testing/storage_backend.go

@@ -1106,6 +1106,7 @@ func writeEvent(ctx context.Context, store resource.StorageBackend, name string,
 	return store.WriteEvent(ctx, resource.WriteEvent{
 		Type:  action,
 		Value: options.Value,
+		GUID:  uuid.New().String(),
 		Key: &resourcepb.ResourceKey{
 			Namespace: options.Namespace,
 			Group:     options.Group,