[Bug]: mindmap树形布局，节点收起后，占用的空间没有被收回，整体布局未做重新排布

### Describe the bug / 问题描述

if (btn && !Reflect.has(btn, '__bind__')) {
Reflect.set(btn, '__bind__', true);
btn.addEventListener(CommonEvent.CLICK, async (e: any) => {
e.stopPropagation();
const { collapsed } = this.attributes;
const graph = this.context.graph;
if (collapsed) graph.expandElement(this.id, { animation: true, align: true });
else graph.collapseElement(this.id, { animation: true, align: true });
});
}

### Reproduction link / 复现链接

_No response_

### Steps to Reproduce the Bug or Issue / 重现步骤

_No response_

### Version / 版本

Please select / 请选择

### OS / 操作系统

- [ ] macOS
- [ ] Windows
- [ ] Linux
- [ ] Others / 其他

### Browser / 浏览器

- [ ] Chrome
- [ ] Edge
- [ ] Firefox
- [ ] Safari (Limited support / 有限支持)
- [ ] IE (Nonsupport / 不支持)
- [ ] Others / 其他

Start by tracing the mindmap tree-layout behavior around the shown collapseElement and expandElement calls, using the attached image as the expected symptom. Reproduce a node collapse and verify that the surrounding layout recomputes and releases the space previously occupied by the collapsed subtree.

Written by the indexing model from the issue text.