When one of the nodes of the `a-tree` component uses `disableCheckbox` as `true`, the semi-selected state of its associated parent node disappears

[evanlong-me]

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

Version

3.2.9

Environment

windows10、Google Chrome 103.0.5060.66、Vue3.2.37

Reproduction link

https://stackblitz.com/edit/vue-hv9bw1?file=src%2FApp.vue,src%2Fcomponents%2FHelloWorld.vue

Steps to reproduce

1. 移除Dome中的 treeData[0].disableCheckbox 属性 --- 能看到正常显示
2. 对移除的 disableCheckbox 属性进行撤回 --- 会发现所关联的半选状态消失

What is expected?

所关联的父节点的半选状态应该保留。 原因：

1. 被 disableCheckbox 时没有半选状态，用户将不会再有欲望往下展开或者往下寻找
2. 这是给用户的唯一的提示证明

What is actually happening?

当 a-tree 组件其中一个节点使用 disableCheckbox 为 true 时，它所关联的父节点的半选状态消失不见

---

disableCheckbox 所做的事情只应该是禁用 Checkbox，而不是做本质的事情以外影响其他的交互

[tangjinzhou]

设置 checkStrictly 后，是否选中或半选，都是自己控制的

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[github-actions[bot]]

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