Draft: Step-up auth: Add feature tests for different sign in methods (Part 2)

What does this MR do and why?

test: Step-up auth: Feature tests for different initial sign-in methods

In the MR !176095, we added basic feature tests for step-up auth.

This MR includes more advanced feature tests for scenarios with different initial sign-in methods. It is important to test these scenarios additionally to improve the coverage and ensure that the step-up auth feature works as expected.

🛠️ with ❤️ at Siemens

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MR Checklist (@gerardo-navarro)

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the javascript style guides
• Conforms to the database guides
• Wait for Draft: Step-up auth: Add feature tests for step... (!176095)

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Related to #474650