Fix: detecting rooms where the number of the participants is smaller …

…than 2 as abuse

src/lottery/schedules/detectAbusingUsers.js

@@ -134,6 +134,7 @@ const detectLessChatUsers = async (period, candidateUserIds) => {
       if (
         period.startAt > room.time ||
         period.endAt <= room.time ||
+        room.part.length < 2 ||
         room.settlementTotal === 0
       )
         return null;