Revert "fix popup POM"

This reverts commit a8898bd.

Author: sjbur

e2e/testcafe-devextreme/tests/scheduler/common/hotkeysBehaviour/hotkeysBehaviour.ts

@@ -68,7 +68,8 @@ fixture.disablePageReloads`Hotkeys for appointments update and navigation`
   test(`Navigate between tooltip appointments in the "${view}" view (Up/Down)`, async (t) => {
     const scheduler = new Scheduler('#container');
     const collector = scheduler.collectors.find('3');
-    const { appointmentPopup, appointmentTooltip } = scheduler;
+    const { appointmentPopup } = scheduler;
+    const { appointmentTooltip } = scheduler;
 
     await t
       .click(collector.element)

packages/testcafe-models/scheduler/appointment/popup.ts

@@ -8,7 +8,7 @@ import DateBox from '../../dateBox';
 import Button from '../../button';
 
 export const SELECTORS = {
-  appointmentPopup: `.dx-scheduler-appointment-popup.dx-popup`,
+  appointmentPopup: `.dx-scheduler-appointment-popup${Popup.className}`,
   form: `.dx-scheduler-form`,
   doneButton: `.dx-popup-done.dx-button.dx-widget`,
   cancelButton: `.dx-popup-cancel.dx-button.dx-widget`,