fix(vm): preserve spec.blockDeviceRefs order in hotplug handler (#2360)

Iterate over Spec.BlockDeviceRefs slice instead of map when hotplugging to preserve hotplug order.

Signed-off-by: Daniil Loktev <lokt.daniil@gmail.com>

Author: loktev-d

images/virtualization-artifact/pkg/controller/vm/internal/hotplug_handler.go

@@ -94,7 +94,8 @@ func (h *HotplugHandler) Handle(ctx context.Context, s state.VirtualMachineState
 	var errs []error
 
 	// 1. Hotplugging
-	for key := range specDevices {
+	for _, bd := range current.Spec.BlockDeviceRefs {
+		key := nameKindKey{kind: bd.Kind, name: bd.Name}
 		volName := generateVolumeName(key)
 		if _, onKVVM := kvvmDevices[key]; onKVVM {
 			continue