Add delay for test application (#21526)

Author: musienko-maxim

tests/e2e/testsLibrary/CodeExecutionTests.ts

@@ -108,6 +108,10 @@ export class CodeExecutionTests {
         test(`Run command '${taskName}' expecting notification`, async () => {
             await this.runTaskUsingQuickOpenContainer(taskName);
             await this.ide.waitNotification(notificationText, timeout);
+            // Need delay because a test application is not accessible immediately - it needs time.  
+            // Later can be improved (we can get and request the app. URL with axios until it is available)
+            // 7 sec is approximate value for most cases
+            await this.driverHelper.wait(7_000);
             this.workspaceHandlingTests.setWindowHandle(await this.browserTabsUtil.getCurrentWindowHandle());
             await this.ide.clickOnNotificationButton(notificationText, buttonText);
             await this.driverHelper.wait(5_000);