✨ [Feature]: 合计行重算方法

[470097042]

What problem does this feature solve

合计行正常情况下是加载数据和编辑数据后会触发合计行重算，但是有些情况修改gird数据时；例如，插入新行insertAt，获取高亮行getCurrentRow()后修改数据，合计行都不重算。

What does the proposed API look like

提供一个合计行重算的方法，在特殊情况下自行调用。gird的数据有任何变化时，都可以根据自行调用重算合计行

What is your project name

wyq

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Title: ✨ [Feature]: Total row recalculation method

[gimmyhehe]

@470097042 您好，目前已经有相关方法可以实现您所述需求（updateFooter），相关文档已经补充 #2753

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@470097042 Hello, there are currently relevant methods to achieve your requirements (updateFooter), and the relevant documents have been added #2753