[Enhancement] [tree] element-plus的tree拖拽不兼容触屏，我想添加touch事件，但在touchmove的事件中获取到的treeNode（目标位置）是被拖拽元素

[qaq-qwq-qvq]

Feature type: Other

Details

• Enhanced component name: tree

Description

我直接在tree-node.vue的标签上添加了

	@touchstart="handleDragStart"
	@touchmove="handleDragOver"
	@touchend="handleDragEnd"

在useDragNode.ts中的treeNodeDragStart、treeNodeDragOver、treeNodeDragEnd添加了一些非空判断
例如：

    //添加部分
    if (typeof event.dataTransfer === 'undefined') {
      event.dataTransfer = {}
    }
     //原有部分
    event.dataTransfer.effectAllowed = 'move'

目前的效果就是在触摸状态下可以拖拽，但松手后被拖拽的部分会消失

我检查后发现应该是因为handleDragOver事件中获取到的目标位置参数props.node是被拖拽的元素，所以修改位置时会没有目标位置导致的消失

    const handleDragOver = (event: DragEvent) => {
      event.preventDefault()
      if (!tree.props.draggable) return
      dragEvents.treeNodeDragOver({
        event,
        treeNode: { $el: node$.value, node: props.node },
      })
    }

想问一下touchmove的事件中应该怎么获取目标位置，或者遇到的类似的情况是怎么解决的？
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I added it directly to the label of tree node. vue

    @Touchstart="handleDragStart"

    @Touchmove="handleDragOver"

    @Touch="handleDragEnd"

Added some non null judgments to treeNodeDragStart, treeNodeDragOver, and treeNodeDragEnd in useDragNode.ts

For example:

    //Add section

    If (typeof event. dataTransfer=='undefined'){

        Event. dataTransfer={}

    }

    //Original part

    Event. dataTransfer. effectAllowed='move '

The current effect is that it can be dragged in touch mode, but the dragged part will disappear after releasing the hand

After checking, I found that it should be because the target position parameter props.node obtained from the handleDragOver event is a dragged element, so when modifying the position, there will be no target position causing it to disappear

    Const handleDragOver=(event: DragEvent)=>{

        Event. preventDefault ()

        If (! Tree. props. draggable) return

        DragEvents. treeNodeDragOver ({

            Event,

            TreeNode: {$el: node $. value, node: props. node},

        })

    }

I would like to ask how to obtain the target location in the touchmove event, or how to solve similar situations encountered?