E2E Happy path tests are failing while waiting for workspace readiness

[dmytro-ndp]

Describe the bug

E2E Happy path tests are failing while waiting for workspace readiness:
https://codeready-workspaces-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/che-pr-tests/view/K8S/job/Multiuser-Che-PR-check-E2E-Happy-path-tests-against-k8s/4377/console

  Validation of workspace start
          ▼ DriverHelper.navigateToUrl https://che-eclipse-che.10.0.102.227.nip.io/dashboard/#/ide/admin/petclinic-dev-environment
  [WARN] PreferencesHandler.setPreference could not set theia-user-preferences from api/preferences response, forcing manually.
          ▼ PreferencesHandler.setTerminalToDom
          ▼ MultiUserLoginPage.login
          ▼ CheLoginPage.waitEclipseCheLoginFormPage
          ▼ CheLoginPage.inputUserNameEclipseCheLoginPage username: "admin"
          ▼ CheLoginPage.inputPaswordEclipseCheLoginPage password: "admin"
          ▼ CheLoginPage.clickEclipseCheLoginButton
    ✓ Open workspace (3867ms)
          ▼ Ide.waitAndSwitchToIdeFrame
          ▼ Ide.waitPreloaderVisible
    1) Wait for workspace readiness
  [ERROR] CheReporter runner.on.fail: Validation of workspace start Wait for workspace readiness failed after 722912ms


  1 passing (12m)
  1 failing

  1) Validation of workspace start
       Wait for workspace readiness:
     TimeoutError: Exceeded maximum visibility checkings attempts for 'By(css selector, .theia-preload)' element, timeouted after 360000
      at DriverHelper.waitVisibility (/tmp/e2e/utils/DriverHelper.ts:152:15)
      at process._tickCallback (internal/process/next_tick.js:68:7)

The issue has affected PR Happy path tests, therefor it's kind of blocker.

Che version

• latest
• nightly
• other: please specify

Steps to reproduce

Expected behavior

Runtime

• kubernetes (include output of kubectl version)
• Openshift (include output of oc version)
• minikube (include output of minikube version and kubectl version)
• minishift (include output of minishift version and oc version)
• docker-desktop + K8S (include output of docker version and kubectl version)
• other: (please specify)

Screenshots

Installation method

• chectl
  • provide a full command that was used to deploy Eclipse Che (including the output)
  • provide an output of chectl version command
• OperatorHub
• I don't know

Environment

• my computer
  • Windows
  • Linux
  • macOS
• Cloud
  • Amazon
  • Azure
  • GCE
  • other (please specify)
• other: please specify

Eclipse Che Logs

Additional context

Latest changes: Dashboard Next #18391

[Ohrimenko1988]

Done: #18428