Description of problem:
Unable to validate xml when creating nwfilter_binding with Sys::Virt::NWFilterBinding::CREATE_VALIDATE flag.

Version-Release number of selected component (if applicable):
perl-Sys-Virt-7.8.0-1.module+el8.6.0+13062+b4fa4cf3.x86_64
libvirt-7.9.0-1.module+el8.6.0+13150+28339563.x86_64
qemu-kvm-6.1.0-5.module+el8.6.0+13430+8fdd5f85.x86_64


How reproducible:
100%

Steps to Reproduce:
1.Run $conn->create_nwfilter_binding($err_xml, Sys::Virt::NWFilterBinding::CREATE_VALIDATE)

Or run below script:
================
# -*- perl -*-

use Sys::Virt;
my $conn = Sys::Virt->new();
my $err_xml= <<EOF;
  <filterbinding>
   <owner>
    <uuid>dd7949ca-ddcc-4f91-8808-e6e9844650e5</uuid>
   </owner>
   <portdev name='vnet1'/>
  </filterbinding>
EOF

my $res = $conn->create_nwfilter_binding($err_xml, Sys::Virt::NWFilterBinding::CREATE_VALIDATE);
================

Actual results:
The xml was not validated:
==
perl test.pl 
libvirt error code: 1, message: internal error: filter binding has no owner name


Expected results:
It should raise Sys::Virt::Error::ERR_INVALID_SCHEMA.

Additional info:
It works with below changes:
====================
# diff  /usr/lib64/perl5/vendor_perl/Sys/Virt/NWFilterBinding.pm /tmp/NWFilterBinding.pm 
52c52
< 	$self = Sys::Virt::NWFilterBinding::_create_xml($con,  $params{xml}, $params{flags});
---
> 	$self = Sys::Virt::NWFilterBinding::_create_xml($con,  $params{xml});

====================
# perl test.pl 
libvirt error code: 92, message: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/nwfilterbinding.rng
Expecting element name, got uuid
Element owner failed to validate content
Expecting an element mac, got nothing
Invalid sequence in interleave
Element filterbinding failed to validate content