树形表格，`checkStrictly = false` 一个个勾选复选框，全选框的状态不对，为半选状态

[eicoder]

• [ ] I'm sure this does not appear in the issue list of the repository

Basic Info

• Package Name And Version: @arco-design/web-vue@2.56.1
• Browser: chrome128.0.0.0
• Reproduction Link: https://codesandbox.io/p/sandbox/recursing-goodall-82j52g?file=%2Fsrc%2FApp.vue%3A86%2C9

Extra info

selectedRowKeys的值不对

What is expected?

全部勾选，全选框应为勾选状态不应该为半勾选状态

Steps to reproduce

手动一个个勾选所复选框 全选框为半选状态

[guo0588]

这个样子

[github-actions[bot]]

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