fix: fixed popover type (DevExpress#30208)

Author: sergey-kras

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

@@ -13,6 +13,7 @@ import {
 
 import {
     Cancelable,
+    AsyncCancelable,
     EventInfo,
     InitializedEventInfo,
     ChangedOptionInfo,
@@ -52,7 +53,7 @@ export type DisposingEvent = EventInfo<dxPopover>;
  * @type object
  * @inherits Cancelable,EventInfo
  */
-export type HidingEvent = Cancelable & EventInfo<dxPopover>;
+export type HidingEvent = AsyncCancelable & EventInfo<dxPopover>;
 
 /**
  * @docid _ui_popover_HiddenEvent

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

@@ -24510,7 +24510,7 @@ declare module DevExpress.ui {
     /**
      * [descr:_ui_popover_HidingEvent]
      */
-    export type HidingEvent = DevExpress.common.core.events.Cancelable &
+    export type HidingEvent = DevExpress.common.core.events.AsyncCancelable &
       DevExpress.common.core.events.EventInfo<dxPopover>;
     /**
      * [descr:_ui_popover_InitializedEvent]