[Bug] 冻结列中间有合并单元格时，会把内容分开

[xiafrog]

Version

1.17.0

Link to Minimal Reproduction

https://visactor.io/vtable/guide/basic_function/frozen_column_row

Steps to Reproduce

1. 设置合并单元格
2. 冻结列数设置为合并单元格的中间

Current Behavior

合并单元格的内容会被一分为二

Expected Behavior

被合并的单元格按照冻结列拆分为左右两部分，两边渲染都渲染原本合并单元格的内容

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response

[fangsmile]

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