Fix (beta): short-circuit ObjectOwnedOrGrantedPermissionsFilter for superusers (#13183)

Mirrors the existing short-circuit already present in its sibling class,
ObjectOwnedPermissionsFilter, which this one lacked.

Benchmarked as a superuser against a 100k-document corpus: no measurable
difference. django-guardian's own get_objects_for_user() (called via
super().filter_queryset()) already returns the queryset unrestricted for
superusers before this change, so the guardian permission tables were
never actually queried for superusers either way. This change only skips
building a redundant 3-way OR of conditions that are all subsets of the
already-unrestricted queryset -- worth keeping for clarity/consistency
with the sibling filter, not as a performance claim.

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

src/documents/filters.py

@@ -1024,6 +1024,8 @@ class ObjectOwnedOrGrantedPermissionsFilter(ObjectPermissionsFilter):
     """
 
     def filter_queryset(self, request, queryset, view):
+        if request.user.is_superuser:
+            return queryset
         objects_with_perms = super().filter_queryset(request, queryset, view)
         objects_owned = queryset.filter(owner=request.user)
         objects_unowned = queryset.filter(owner__isnull=True)