VXLAN persistent networks create bridges on hosts that never ran a VM on them, but don't clean them up

### problem

With a persistent network offering, CloudStack builds the network's bridge on **every** host in the zone. But when the network is deleted it only cleans the bridge up on hosts that actually ran a VM on it. On every other host, the bridge and its VXLAN interface stay behind forever.

**Investigation**
There is a difference between the filters when creating a persistent network, and removing a persistent network.
**Creation:**
`DefaultHostListener.setupPersistentNetwork()` creates the bridges on hostConnect/hostEnabled for all networks from `getAllPersistentNetworksFromZone()` - no isolation-method filter.
**Removal:**
`NetworkOrchestrator.cleanupPersistentnNetworkResources()` is gated by `networkMeetsPersistenceCriteria()`, which requires the broadcast URI scheme to be `Vlan`, so for `vxlan://` networks `CleanupPersistentNetworkResourceCommand` is never sent. (`hostAboutToBeRemoved()` sends the same cleanup with no scheme check either - the VLAN-only gate exists only on the network-delete path.)

Hosts that ran a VM on the network are cleaned up via the normal VM-lifecycle teardown, so the leak only affects uninvolved hosts.

### versions

4.22.1.1, KVM, advanced zone with VXLAN isolation, persistent network offerings.

### The steps to reproduce the bug

1. Advanced zone, KVM, VXLAN isolation, 3+ hosts.
2. Create a VPC with two tiers on a persistent offering.
3. Start VMs so they land on only some hosts. (Restarting `cloudstack-agent` on an uninvolved host also creates the bridges there via hostConnect.)
4. Delete the tiers, then the VPC.
5. `ls -d /sys/class/net/brvx-*` on each host.

Expected behaviour:
The bridge and VXLAN interface are removed from every host in the zone.

Actual behaviour:
The VNI is still present on hosts that never ran a VM on the network; `CleanupPersistentNetworkResourceCommand` never appears in `management-server.log` during the delete.

### What to do about it?

Accept `Vxlan` alongside `Vlan` in `networkMeetsPersistenceCriteria()`, or drop the scheme check to match the setup path.

Bắt đầu với NetworkOrchestrator.cleanupPersistentnNetworkResources() và networkMeetsPersistenceCriteria(), sau đó so sánh chúng với DefaultHostListener.setupPersistentNetwork() và hostAboutToBeRemoved(). Tái hiện quy trình xóa mạng VXLAN persistent trên ba host trở lên và kiểm tra management-server.log cùng /sys/class/net/brvx-*; được xem là hoàn tất khi cleanup được gửi và các bridge cùng giao diện VXLAN biến mất khỏi mọi host.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.