🎨(front,back) minor style and formatting fixes

- Add gap to attendees input layout
- Fix long line formatting in subscription API test

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

src/backend/core/tests/test_calendar_subscription_api.py

@@ -233,7 +233,9 @@ class TestSubscriptionTokenViewSet:
         client.force_login(subscription.owner)
 
         base_by_path_url = reverse("subscription-tokens-by-path")
-        by_path_url = f"{base_by_path_url}?caldav_path={quote(subscription.caldav_path, safe='')}"
+        by_path_url = (
+            f"{base_by_path_url}?caldav_path={quote(subscription.caldav_path, safe='')}"
+        )
         create_url = reverse("subscription-tokens-list")
 
         # Delete old token

src/frontend/apps/calendars/src/features/calendar/components/scheduler/AttendeesInput.scss

@@ -1,6 +1,7 @@
 .attendees-input {
   display: flex;
   flex-direction: column;
+  gap: 5px;
 
   &__field {
     display: flex;