fix: Correct function closure in ticket.js breaking tab navigation

Fixed syntax error from previous commit where updateTicketStatus()
function had incorrect closing. Changed `});` to `}` at line 434.

This was preventing showTab() and other functions from loading,
breaking the Description/Comments/Activity tab navigation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

assets/js/ticket.js

@@ -431,7 +431,7 @@ function updateTicketStatus() {
     }
 
     performStatusChange(statusSelect, newStatus);
-});
+}
 
 // Extract status change logic into reusable function
 function performStatusChange(statusSelect, newStatus) {