element plus tree拖动节点交换位置和改变层级问题(解决方案)

<el-tree ref="treeRef" style="width: 200px; margin-top: 10px" :data="designerStore.cacheComponents"
						draggable node-key="id" highlight-current v-if="flag"
						:current-node-key="designerStore.currentCpt ? designerStore.currentCpt.id : null"
						:allow-drop="allowDrop" :props="{ label: 'cptTitle', id: 'id', children: 'children' }"
						empty-text="无图层">
						<template #default="{ node, data }">
							<span class="custom-tree-node" @dblclick.stop="editCateName(data, node)"
								@mousedown="showConfigBar(data)" @contextmenu.prevent="showContextMenu">
								<img class="selectedItem-icon"
									:src="require('@/assets/icon/components/' + getIcon(data) + '.svg')" />
								<el-input v-model="data.cptTitle" v-if="isEdit === data.id" :ref="data.id"
									placeholder="请输入" @blur="editSave()" @keyup.enter="editSave()" size="small" />
								<span v-else>{{ data.cptTitle }}</span>
							</span>
						</template>
					</el-tree>

allowDrop(draggingNode, dropNode, type) {
				if (dropNode.data.cptKey === 'cpt-panel') {
					return true
				} else {
					return type !== 'inner'
				}
			}