[Bug] 甘特图拖拽日期和连接线句柄冲突

[why0123]

Version

1.17.7

Link to Minimal Reproduction

https://visactor.com/vtable/demo/gantt/gantt-dependency-link-create

Steps to Reproduce

选中 range 后，点击point，日期会被延长

2025-05-06.17.24.21.mov

Current Behavior

选中 range 后，点击point，日期会被延长

Expected Behavior

点击 point 只触发自己的事件，而不会引起 date range change

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response

[alonesmall]

认领该issue。