fix(badges): default sort puts unprinted badges first (print_count ASC, then name ASC)

Previously the default sort was name-only, mixing printed and unprinted badges
together. Staff at registration need unprinted badges at the top so they can
immediately see who still needs a badge without filtering.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/events/[event_id]/(badges)/badges/+page.svelte

@@ -433,7 +433,8 @@ async function handle_search_refresh(params: any) {
                 order_by_li = { affiliations: 'ASC' };
                 break;
             default:
-                order_by_li = { given_name: 'ASC' };
+                // Unprinted (print_count=0) first, then alphabetical within each group.
+                order_by_li = { print_count: 'ASC', given_name: 'ASC' };
         }
 
         const results = await events_func.search__event_badge({