[textarea] IxTextarea 无法配置原生 textarea 的 cols 属性

[dabuside]

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Reproduction link

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Steps to reproduce

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What is expected?

IxTextarea 可以配置原生 textarea 的 cols 属性

What is actually happening?

IxTextarea 无法配置原生 textarea 的 cols 属性

Environment Info

Any additional comments? (optional)

IxProTextarea的有考虑支持cols，rows吗？