Cypress test. Maintenance of popups visibility. (#2838)

* Cypress test. Issue 2230.

* Typo fix

* rename the file

tests/cypress/integration/actions_tasks_objects/issue_2230_maintenance_popover_visibility.js

+// Copyright (C) 2021 Intel Corporation
+//
+// SPDX-License-Identifier: MIT
+
+/// <reference types="cypress" />
+
+import { taskName } from '../../support/const';
+
+context('Check maintenance of popups visibility.', () => {
+    const issueId = '2230';
+
+    before(() => {
+        cy.openTaskJob(taskName);
+    });
+
+    describe(`Testing issue "${issueId}"`, () => {
+        it('Open a popover for draw an object and apply the "mouseout" event to it. The popover be visible.', () => {
+            cy.interactControlButton('draw-rectangle');
+            cy.get('.cvat-draw-rectangle-popover-visible').trigger('mouseout').wait(500);
+            cy.get('.cvat-draw-rectangle-popover-visible').should('exist');
+        });
+
+        it('Click to another element. The popover hidden.', () => {
+            cy.get('.cvat-canvas-container').click();
+            cy.get('.cvat-draw-rectangle-popover-visible').should('not.exist');
+        });
+    });
+});