alsa: rename vm.type to cpu.vm.name to be consistent with pipewire master

See 7e9e261fa6

src/config/wireplumber.conf.d/alsa-vm.conf

@@ -6,11 +6,11 @@ monitor.alsa.rules = [
     matches = [
       {
         node.name = "~alsa_input.pci.*"
-        vm.type = "~.*"
+        cpu.vm.name = "~.*"
       }
       {
         node.name = "~alsa_output.pci.*"
-        vm.type = "~.*"
+        cpu.vm.name = "~.*"
       }
     ]
     actions = {

src/scripts/monitors/alsa.lua

@@ -144,10 +144,10 @@ function createNode(parent, id, obj_type, factory, properties)
     end
   end
 
-  -- add vm.type for rule matching purposes
+  -- add cpu.vm.name for rule matching purposes
   local vm_type = Core.get_vm_type()
   if nonempty(vm_type) then
-    properties["vm.type"] = vm_type
+    properties["cpu.vm.name"] = vm_type
   end
 
   -- apply properties from rules defined in JSON .conf file