TableComponents header cell with columns change render error

[macheteHot]

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

Version

2.2.2

Environment

vue 3.0

Reproduction link

Steps to reproduce

click set Fixed three time and click del Fixed three time

What is expected?

header render order correct

What is actually happening?

header render is repeat

[tangjinzhou]

set uni key by

createVNode('th', { key: props.key }, ctx.children);

[github-actions]

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