add cypress test for verify app can be installation from GitOps catalog

[linear]

This task is to write a Cypress test to automate installation of a GitOps catalog application. The test should log in to the Kubernetes console, verify that the GitOps catalog tab is populated, install the Kubernetes dashboard from the catalog and ensure it is accessible externally. The scope doesn't include verifying the application shows up in "Installed application" section.

Acceptance criteria / Definition of Done:

• The test uses the flow
  • Login to Kubefirst console using K-bot credentials
  • Verify that the Gitops catalog tab is populated with application from upstream catalog
  • Install Kubernetes dashboard app from the catalog
  • Ensure the dashboard is accessible externally ( return status code 200)
• The test is integrated with all other Cypress tests.
• The test can be executed independently and unattended in CI.

Definition of ready

• The GitOps catalog flow is added to the CI pipeline's test step

Non-goals

• Verifying the apps shows up "Installed Applications" section (this is outside the scope of the current task).

[linear]

KRA-68 add test for Gitops catalog flow