fix(lite/treeview): fix host highlighting (#6747)

From a VM view, after selecting an host, the previously selected host remains highlighted

@xen-orchestra/lite/src/views/host/HostRootView.vue

@@ -6,4 +6,18 @@
 
 <script lang="ts" setup>
 import ObjectNotFoundWrapper from "@/components/ObjectNotFoundWrapper.vue";
+import { useRoute } from "vue-router";
+import { watchEffect } from "vue";
+import { useHostStore } from "@/stores/host.store";
+import { useUiStore } from "@/stores/ui.store";
+
+const route = useRoute();
+const hostStore = useHostStore();
+const uiStore = useUiStore();
+
+watchEffect(() => {
+  uiStore.currentHostOpaqueRef = hostStore.getRecordByUuid(
+    route.params.uuid as string
+  )?.$ref;
+});
 </script>