gridRow 参数无效

### 问题描述

```html

f2

window.onload = function() {
const chart = new G2.Chart({ autoFit: true, container: 'container' })

chart.options({
type: 'interval',
height: 640,
data: {
type: "fetch",
value: "https://gw.alipayobjects.com/os/bmw-prod/79fd9317-d2af-4bc4-90fa-9d07357398fd.csv",
},
encode: { y: "value", color: "name" },
transform: [{ type: "stackY" }],
scale: { color: { palette: "spectral", offset: (t) => t * 0.8 + 0.1 } },
coordinate: { type: "theta", innerRadius: 0.6 },
style: { stroke: "white", inset: 1, radius: 10 },
animate: { enter: { type: "waveIn" } },
legend: {
color: {
layout: {
alignItems: 'center',
flexDirection: 'column',
justifyContent: 'center',
},
display: 'grid',
gridCol: 2, // 显示问题
gridRow: 5, // 参数无效
position: 'right',
itemMarker: 'circle',
itemLabelFill: '#167068',
},
},
})

chart.render()
}

```

### 重现链接

_No response_

### 重现步骤

_No response_

### 预期行为

_No response_

### 平台

- 操作系统: [macOS, Windows, Linux, React Native ...]
- 网页浏览器: [Google Chrome, Safari, Firefox]

### 屏幕截图或视频（可选）

_No response_

### 补充说明（可选）

_No response_

Start from the inline G2 Chart configuration, focusing on the legend color settings that use display: 'grid', gridCol, and gridRow. Reproduce the chart in a browser and trace how these options are handled; done means gridRow changes the legend layout as intended and the behavior is covered by an appropriate regression test.

Written by the indexing model from the issue text.