feat(submissions): show all submissions for admin

polylan_submitter/submissions/api.py

@@ -202,10 +202,12 @@ def list_user_submissions(request: HttpRequest, event_path: str, scope_id: UUID)
     if not request.user.is_authenticated:
         return 403, {"detail": "Authentication required"}
 
-    submissions = Submission.for_event.filter(
-        scope_id=scope_id, user=request.user
-    ).order_by("-created_at")
-    return submissions
+    submissions = Submission.for_event.filter(scope_id=scope_id)
+    # Admins see every player's submissions for the scope
+    if not request.user.is_staff:
+        submissions = submissions.filter(user=request.user)
+
+    return submissions.select_related("user").order_by("-created_at")
 
 
 @router.get(f"{PREFIX}/submission/by/game", response=list[SubmissionOut])