fix(team-tree): 修复 onLoad/onShow 生命周期双发 guard 变量名对齐规范

cfc-frontend/pages/profile/team-tree.vue

@@ -102,10 +102,11 @@ export default {
   },
   onLoad() {
     this.loadData()
+    this._onLoadFired = true
   },
   onShow() {
-    if (!this._loadFired) {
-      this._loadFired = true
+    if (this._onLoadFired) {
+      this._onLoadFired = false
     } else {
       this.loadData()
     }