[V5] Mindmap layout, deleting nodes does not trigger collapse animation / animation error

### Describe the bug / 问题描述

删除无children的节点：无法触发collapse动画，只有渐隐动画；
删除有children的节点：目标节点无collapse动画，只有渐隐动画，子节点有collapse动画，但动画位置错误过度到了root节点、子节点未删除；
删除有children的节点并手动删除子节点：无法触发collapse动画，只有渐隐过度动画；

预期结果：像v4版本一样，以上操作都可触发collapse动画

### Reproduction link / 重现链接

https://codesandbox.io/p/sandbox/strange-turing-l9ftpk

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

重现链接中设置了三个定时器，分别对应问题描述中的三种情况

### G6 Version / G6 版本

🆕 5.x

### Operating System / 操作系统

macOS, Windows

### Browser / 浏览器

Edge

### Additional context / 补充说明

重现链接使用版本为5.0.12，5.0.12以上版本存在其他BUG https://github.com/antvis/G6/issues/6222 每次调用layout都会重新展开，影响复现

Start with the linked CodeSandbox using G6 5.0.12 and reproduce the three timer-driven deletion cases. Compare the collapse animation behavior with G6 v4, while accounting for the separate layout-expansion problem described in issue #6222. Done means deleting leaf and parent nodes triggers the expected collapse animation, removes child nodes correctly, and keeps animation positions correct.

Written by the indexing model from the issue text.