[Bug] 自定义展开收起图标 二级下面的marginRight设置为0 没有效果 图标和文字间有间距

Version

1.18.5

Link to Minimal Reproduction

111

Steps to Reproduce

11

Current Behavior

VTable.register.icon('expand', {
type: 'svg',
svg: minusIcon,
width: 20,
height: 20,
name: 'expand',
funcType: VTable.TYPES.IconFuncTypeEnum.expand, // 这个配置是必须的
positionType: VTable.TYPES.IconPosition.left,
marginRight: 0
});
// 替换收起图标
VTable.register.icon('collapse', {
type: 'svg',
svg: plusIcon,
width: 20,
height: 20,
name: 'collapse',
funcType: VTable.TYPES.IconFuncTypeEnum.collapse,
positionType: VTable.TYPES.IconPosition.left,
marginRight: 0
// 其他配置...
});

Expected Behavior

11

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

Start by reproducing the issue in VTable 1.18.5 using the VTable.register.icon expand and collapse configurations shown in the report. Trace how the custom icon's marginRight is applied to the second-level row layout, then verify that setting it to 0 removes the gap between the icon and text and add regression coverage if the project provides a relevant test entry point.