[bug] fix AxisLabel.onZero not work in YAxis

CHANGELOG.md

@@ -54,6 +54,7 @@
 
 ## master
 
+* (2022.07.02) 修复`YAxis`的`AxisLabel`设置`onZero`不生效的问题
 * (2022.07.02) 修复`AxisLabel`代码设置`distance`属性后一直刷新的问题
 * (2022.06.30) 修复`Runtime`下代码创建图表时组件无法初始化的问题
 * (2022.06.29) 增加`Tooltip`的`itemFormatter`支持`{c0}`显示各维度数据 (#205)

Runtime/Component/Axis/YAxis/YAxisHander.cs

@@ -72,7 +72,8 @@ namespace XCharts.Runtime
             if (grid == null)
                 return Vector3.zero;
 
-            return GetLabelPosition(i, Orient.Vertical, component, null,
+            var xAxis = chart.GetChartComponent<XAxis>(component.index);
+            return GetLabelPosition(i, Orient.Vertical, component, xAxis,
                 chart.theme.axis,
                 scaleWid,
                 grid.context.x,