fix: remove defineEmits from explicit imports

https://vuejs.org/api/sfc-script-setup#defineprops-defineemits

frontend/src/components/ReviewersListSidebar.vue

@@ -58,7 +58,7 @@
 </template>
 
 <script setup lang="ts">
-import { defineEmits, ref, watch } from "vue";
+import { ref, watch } from "vue";
 import FieldLabel from "@/components/form/FieldLabel.vue";
 import BootstrapModal from "@/components/BootstrapModal.vue";
 import ReviewerEditForm from "@/components/ReviewerEditForm.vue";