fix(Desktop): add missing initial state flags for window

为课程中心窗体初始化新增isdrag、isstretching、isenlarge、isnarrow四个初始状态属性，修复窗体初始状态未正确设置的问题

js/Desktop/DeskTop.js

@@ -5297,7 +5297,11 @@ U.MD.D.I.openInApplication = function (str, data, screenType, tType) {
                     "style": { "width": "100%", "height": "100%", "overflow": 'hidden' },
                     "onresize": function () { }
                 }, {
-                    closecallback: function () { }
+                    closecallback: function () { },
+                    isdrag: false,
+                    isstretching: false,
+                    isenlarge: false,
+                    isnarrow: false
                 }, { "style": { "height": "36px" } }).form; //创建窗体
                 _taskbar = { "id": str + _formdiv.id, "style": { "backgroundImage": "url(/img/icon/study.png)" }, "name": "课程中心", "forms": _formdiv, "click": function () { U.MD.D.I.openApplication(str, obj, info); } }
                 break;