chore: fix BasicTree

src/components/Tree/src/BasicTree.vue

@@ -372,6 +372,7 @@ export default defineComponent({
 
         const iconDom = icon ? (<TreeIcon icon={icon} />) : slots.icon ? (<span class="mr-1">{getSlot(slots, 'icon')}</span>) : null
 
+        item.__title = item[titleField] // 缓存 title 值到 __title，避免获取 title 为 vnode
         item[titleField] = (
           <span class={`${bem('title')} pl-2`} onClick={handleClickNode.bind(null, item[keyField], item[childrenField])}>
             {slots?.title
@@ -430,7 +431,7 @@ export default defineComponent({
           )}
           <Spin wrapperClassName={unref(props.treeWrapperClassName)} spinning={unref(props.loading)} tip="加载中...">
             <ScrollContainer style={scrollStyle} v-show={!unref(getNotFound)}>
-              <Tree {...unref(getBindValues)} showIcon={false} treeData={treeData.value} loadData={loadData}>
+              <Tree {...unref(getBindValues)} showIcon={false} treeData={treeData.value} loadData={getBindValues.value.loadData ? loadData : undefined}>
                 {extendSlots(slots, ['title'])}
               </Tree>
             </ScrollContainer>