fix: empty databaseID

Author: moonmeister

examples/astro/previews/example-app/src/components/TemplateHierarchyInfo.astro

@@ -9,7 +9,7 @@ if (!template) {
 <aside class="template-hierarchy-info">
   <section>
     <strong>databaseId:</strong>
-    <code>{template.databaseId}</code>
+    <code>{template.databaseId || "None"}</code>
   </section>
   <section>
     <strong>URI:</strong>