Automation: add automated tests for Premium onboarding

Background

Implement automation test cases for Premium onboarding: https://studio.cucumber.io/projects/283030/test-plan/folders/2990804

What to change

• Design: N/A
• Research: N/A
• Spec: N/A
• Legal: N/A
• Development:
  • Add automation test cases for the following 3 scenarios:
    • Get started with ABP Premium
    • Premium onboarding for free user
    • Premium onboarding for premium user

Hints for testers

End to end tests should be passing.

Hints for translators

N/A

Additional information

N/A