Inspector does not fix is_pxe_enabled if add_ports is not all

[Jack Hodgkiss]

If Ironic Inspector is configured with `add_ports = active` the inspector will as expected add all of the ports and will set `PXE boot enabled` to `True` for all ports found. However once inspection is finished it is expected that this setting would be fixed and `PXE boot enabled` would be set based upon contents of the inspection data for a given interface.

I think the issue can be found here https://opendev.org/openstack/ironic-inspector/src/branch/stable/2023.1/ironic_inspector/plugins/standard.py#L327 where introspection_data['interfaces'] only contains interfaces with an IP address and omits all interfaces without which ideally should have their `pxe_enabled` status fixed as done at Line 334 onwards.