[Feature] 支持以行列key的形式上来设置单元格自定义样式

What problem does this feature solve?

目前设置单元格自定义样式时，行列是数字序号，当ListTable的Tree模式下为单元格设置自定义样式的时候，tree的展开和收起会导致自定义样式漂移到其他单元格

What does the proposed API look like?

const option = {
  customCellStyle: [
    {
      id: 'custom-1',
      style: {
        //...
      }
    },
  ],
  customCellStyleArrangement: [
    {
      customStyleId: 'custom-1',
      cellPosition: {
        col: 'a',
        row: 'row1'
      }
    },
    {
      customStyleId: 'custom-1',
      cellPosition: {
        col: ['b', 'c'],
        row: ['row2', 'row3'],
      }
    },
  ],
  records: [
    {
      field: 'row1',
      data:{
        col1: 1,
        col2: 2,
        col3: 3
      },
    },{
      field: 'row2',
      data:{
        col1: 1,
        col2: 2,
        col3: 3
      },
    }
  ],
  columns:[
    {
      field: 'col1',
      title: 'col 1'
    },{
      field: 'col2',
      title: 'col 2'
    },{
      field: 'col3',
      title: 'col 3'
    }
  ],
  widthMode: 'standard'
};

Start by tracing the existing customCellStyle and customCellStyleArrangement handling in the TypeScript table implementation. Check how cell positions are resolved in ListTable tree mode, then verify that row and column keys, including arrays of keys, keep styles attached after expanding and collapsing nodes. Done means the proposed keyed API works without style drift.