Properly treat goldLinks as a set

Author: naglepuff

web/src/views/IndividualResults/StudyPage.vue

@@ -95,7 +95,7 @@ export default defineComponent({
 
     const goldLinks = computed(() => {
       if (!item.value?.gold_study_identifiers && !item.value?.open_in_gold) {
-        return [];
+        return new Set();
       }
       const links = new Set();
       if (item.value.open_in_gold) {
@@ -279,15 +279,15 @@ export default defineComponent({
             </v-list>
             <template
               v-if="
-                goldLinks.keys.length > 0 ||
+                goldLinks.size > 0 ||
                   item.relevant_protocols||
                   item.principal_investigator_websites.length > 0"
             >
               <div class="display-1">
                 Additional Resources
               </div>
               <v-list
-                v-if="goldLinks || item.relevant_protocols.length > 0"
+                v-if="goldLinks.size > 0 || item.relevant_protocols.length > 0"
               >
                 <v-list-item v-if="item.relevant_protocols">
                   <v-list-item-avatar>