fix: fix popup typing

Author: sjbur

packages/devextreme/js/ui/scheduler.d.ts

@@ -31,7 +31,7 @@ import {
 import dxDraggable from './draggable';
 
 import dxForm, { Item as FormItem } from './form';
-import dxPopup from './popup';
+import dxPopup, { Properties as dxSchedulerPopupOptions } from './popup';
 
 import dxSortable from './sortable';
 import { dxToolbarItem } from './toolbar';
@@ -667,10 +667,10 @@ export interface dxSchedulerOptions extends WidgetOptions<dxScheduler> {
       } | undefined;
       /**
        * @docid
-       * @default undefined
+       * @default {}
        * @public
        */
-      popup?: Properties;
+      popup?: dxSchedulerPopupOptions;
     };
     /**
      * @docid

packages/devextreme/ts/dx.all.d.ts

@@ -26505,7 +26505,7 @@ declare module DevExpress.ui {
           /**
            * [descr:dxSchedulerOptions.editing.popup]
            */
-          popup?: DevExpress.ui.dxScheduler.Properties;
+          popup?: DevExpress.ui.dxPopup.Properties;
         };
     /**
      * [descr:dxSchedulerOptions.endDateExpr]