Fix token modal close button resubmitting form

- Change closeTokenModal() to redirect to /api_tokens instead of reload
- Prevents POST resubmission when closing generated token modal
- Avoids 'token name already exists' error on close

templates/api_tokens.html

@@ -192,7 +192,7 @@
 
         function closeTokenModal() {
             document.getElementById('tokenModal').style.display = 'none';
-            location.reload(); // Reload the page
+            window.location.href = '/api_tokens'; // Redirect to avoid POST resubmission
         }
 
         function copyTokenFromModal() {