fix: error handling cases in site-replication (#13901)

- Allow proper SRError to be propagated to
  handlers and converted appropriately.

- Make sure to enable object locking on buckets
  when requested in MakeBucketHook.

- When DNSConfig is enabled attempt to delete it
  first before deleting buckets locally.

cmd/admin-handler-utils.go

@@ -86,6 +86,8 @@ func toAdminAPIErr(ctx context.Context, err error) APIError {
 			Description:    e.Message,
 			HTTPStatusCode: e.StatusCode,
 		}
+	case SRError:
+		apiErr = errorCodes.ToAPIErrWithErr(e.Code, e.Cause)
 	default:
 		switch {
 		case errors.Is(err, errConfigNotFound):