fix(fetch): add onMount on missing fetch

src/components/authors/AuthorIdCard.svelte

@@ -4,11 +4,11 @@
   import {_} from 'svelte-i18n';
   import BigLink from '../common/BigLink.svelte';
   import Avatar from './Avatar.svelte';
+  import {onMount} from 'svelte';
   export let author;
 
   let structure = {};
   $: fetchStructure(author);
-
   const fetchStructure = async currentAuthor => {
     if (currentAuthor?.structure) {
       const responseStructure = await fetch(
@@ -17,6 +17,7 @@
       structure = await responseStructure.json();
     }
   };
+  onMount(fetchStructure);
 </script>
 
 <div class="card">