perf(BasicTree): 获取treeData改写成函数

src/components/Tree/src/BasicTree.vue

@@ -297,7 +297,7 @@ export default defineComponent({
     })
 
     const instance: TreeActionType = {
-      treeData: treeDataRef,
+      getTreeData: () => treeDataRef,
       setExpandedKeys,
       getExpandedKeys,
       setSelectedKeys,

src/components/Tree/src/types/tree.ts

@@ -165,7 +165,7 @@ export interface InsertNodeParams {
 }
 
 export interface TreeActionType {
-  treeData: Ref<TreeDataItem[]>
+  getTreeData: () => Ref<TreeDataItem[]>
   checkAll: (checkAll: boolean) => void
   expandAll: (expandAll: boolean) => void
   setExpandedKeys: (keys: KeyType[]) => void