handle personal leaderboards (pivotId)

src/services/leaderboardService.ts

@@ -40,18 +40,20 @@ export const getLeaderboard = async (
             return [];
         }
         const beforeDocs = await Leaderboard.find({
+            leaderboard,
             score: { $gt: pivotDoc.score }
         })
             .sort({ score: 1 })
             .limit(before);
         const afterDocs = await Leaderboard.find({
+            leaderboard,
             score: { $lt: pivotDoc.score }
         })
             .sort({ score: -1 })
             .limit(after);
         entries = [...beforeDocs.reverse(), pivotDoc, ...afterDocs];
         r = await Leaderboard.countDocuments({
-            leaderboard: leaderboard,
+            leaderboard,
             score: { $gt: pivotDoc.score }
         });
     } else {