fix: Avatar variant context leak #2204

Add 'only' to user_profile include to prevent
parent variant="list" leaking into the avatar
template, which rendered avatar--list (no bg)
instead of avatar--yellow.

Author: julioest

templates/v3/includes/_library_item.html

@@ -36,7 +36,7 @@
   </div>
 
   <div class="library-item__contributor">
-    {% include "v3/includes/_user_profile.html" with author=author %}
+    {% include "v3/includes/_user_profile.html" with author=author only %}
   </div>
 
   <div class="library-item__actions">