fix: FavoriteMessages list missing import watch issues

frontend/src/views/FavoriteMessages.vue

@@ -16,7 +16,7 @@
 <script setup>
 import ListItem from "@/components/ListItem.vue";
 import { getFavoriteMessages } from "@/services/messages";
-import { nextTick, onMounted, ref } from "vue";
+import { nextTick, onMounted, ref, watch } from "vue";
 import { useRoute } from "vue-router";
 
 const route = useRoute();