WIP. check test for click subscription in events_engine (T1307313)"

This reverts commit d0d18c3.

Author: GoodDayForSurf

packages/devextreme-angular/tests/src/ui/data-grid.spec.ts

@@ -607,6 +607,7 @@ describe('DxDataGrid slow tests', () => {
     const memoryAfter =  await (performance as any).measureUserAgentSpecificMemory();
     const memoryDiff = Math.round((memoryAfter.bytes - memoryBefore.bytes) / 1024);
 
-    expect(memoryDiff <= 0).toBeTruthy();
+    expect(memoryDiff ).toEqual(0);
+    // expect(memoryDiff <= 0).toBeTruthy();
   });
 })

packages/devextreme/testing/tests/DevExpress.ui.events/events.utils.nodesDisposing.tests.js

@@ -66,6 +66,6 @@ QUnit.test('should not leave extra handlers in elementDataMap when using subscri
 
     assert.ok(
         finalHandleObjectsCount > 0,
-        `HandleObjects count should return to initial state. Final: ${finalHandleObjectsCount}; ${finalButtonHandleObjectsCount}; ${finalButtonData ? Object.keys(finalButtonData) : '-0'}`
+        `HandleObjects count should return to initial state. Final: ${finalHandleObjectsCount}; ${finalButtonHandleObjectsCount}; ${finalElementData ? Object.keys(finalElementData) : '-0'}`
     );
 });