site: bind search component open to items.length

public/js/app.js

@@ -25,7 +25,7 @@ document.addEventListener('alpine:init', () => {
         return;
       if (currentWord === this.currentWord) {
         /* Show previous items, if any. */
-        this.open = true;
+        this.open = this.items.length > 0;
         return;
       }
       this.currentWord = currentWord;
@@ -35,12 +35,13 @@ document.addEventListener('alpine:init', () => {
 
       if (!response.ok) {
         this.items = [];
+        this.open = false;
         return;
       }
 
       this.activeItem = null;
       this.items = await response.json();
-      this.open = true;
+      this.open = this.items.length > 0;
     },
 
     async fetchSuggestionsOnInput(evt) {