Merge pull request 'by Robin at 20240903 scale = 1' (#722) from feat-IRONFANS-198-Robin into main

Reviewed-on: http://121.41.31.146:3000/wishpal_ironfan/service/pulls/722

bizcommon/util/util.go

@@ -412,6 +412,9 @@ func CreateGaussDecayFunction(name string, filter *Int64Filter, refFilter *Int64
 	origin := float64(lb+ub) / 2
 	offset := float64(-lb+ub) / 2
 	scale := (origin - offset) * refFilter.ScaleCoeff
+	if scale == 0 {
+		scale = 1
+	}
 	return elastic.NewGaussDecayFunction().FieldName(name).Origin(origin).Offset(offset).Scale(scale).Decay(refFilter.Decay).Weight(refFilter.Weight)
 }