Mobile assertion bails out early and passes after desktop assertion fails.

[jeawhanlee]

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Describe the bug Mobile assertion steps fails early if fail message is not empty due to failed assertions step from desktop scenario.

To Reproduce Steps to reproduce the behavior:

1. Run npm run test:lcp
2. Have desktop assertion fail.
3. See that mobile will always pass ( because the assertion step bails out early )

Expected behavior Mobile assertion step should not bail out early when desktop assertion fails.

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Additional context Add any other context about the problem here.

Acceptance Criteria (for WP Media team use only) Clear instructions for developers, to be added before the grooming