【Perf】当前选择版本引用到AppState；

UpmGitTool/Assets/Scritps/UI/Controller/UICtrl_DescripeContent.cs

@@ -81,7 +81,11 @@ namespace UpmGitTool.UI
 
         public UPackage Package { get; private set; }
 
-        public UpmPackageVersion CurrentVersion { get; private set; }
+        public UpmPackageVersion CurrentVersion
+        {
+            get { return AppState.SelectedPackageVersion; }
+            private set { AppState.SelectedPackageVersion = value; }
+        }
 
         public void InitData(UPackage package)
         {