Sunstone shows host-passthrough as a MACHINE_TYPE option #8018

Description
Sunstones shows invalid host-passthrough when selecting machine types

Host passthrough is a CPU model, not a machine type. Available machine types are monitored on a per-host basis

[root@nfhonfedv1 ~]# onehost show -j 0 | jq .HOST.TEMPLATE.KVM_MACHINES
"pc-i440fx-rhel7.6.0 pc pc-q35-rhel9.8.0 q35 pc-q35-rhel9.6.0 pc-q35-rhel8.6.0 pc-q35-rhel9.4.0 pc-q35-rhel8.5.0 pc-q35-rhel8.3.0 pc-q35-rhel7.6.0 pc-q35-rhel8.4.0 pc-q35-rhel9.2.0 pc-q35-rhel8.2.0 pc-q35-rhel9.0.0 pc-q35-rhel8.0.0 pc-q35-rhel8.1.0"

To Reproduce
Try to set a machine type in sunstone.

Expected behavior
Only valid machine types in the list.

Details

• Version: 7.4

Additional context
Thas was also an issue in old sunstone. But iirc it got patched (not completely sure) and new sunstone has it.

Progress Status

• Code committed
• Testing - QA
• Documentation (Release notes - resolved issues, compatibility, known issues)