chore: Replace Thumbnail with Avatar (#12119)

app/javascript/widget/components/GroupedAvatars.vue

@@ -1,5 +1,5 @@
 <script setup>
-import Thumbnail from 'dashboard/components/widgets/Thumbnail.vue';
+import Avatar from 'dashboard/components-next/avatar/Avatar.vue';
 import { defineProps, computed } from 'vue';
 
 const props = defineProps({
@@ -24,11 +24,12 @@ const usersToDisplay = computed(() => props.users.slice(0, props.limit));
       :class="index ? 'ltr:-ml-4 rtl:-mr-4' : ''"
       class="inline-block rounded-full text-white shadow-solid"
     >
-      <Thumbnail
-        size="36px"
-        :username="user.name"
+      <Avatar
+        :name="user.name"
         :src="user.avatar_url"
-        has-border
+        :size="36"
+        class="[&>span]:outline [&>span]:outline-1 [&>span]:outline-n-background"
+        rounded-full
       />
     </span>
   </div>