perf: order admin logs by created_at to use composite index (#5116)

model/log.go

@@ -354,7 +354,7 @@ func GetAllLogs(logType int, startTimestamp int64, endTimestamp int64, modelName
 	if err != nil {
 		return nil, 0, err
 	}
-	err = tx.Order("logs.id desc").Limit(num).Offset(startIdx).Find(&logs).Error
+	err = tx.Order("logs.created_at desc, logs.id desc").Limit(num).Offset(startIdx).Find(&logs).Error
 	if err != nil {
 		return nil, 0, err
 	}