Fix Phi 3.5 MoE tests

[danieldk]

What does this PR do?

PR #2682 also fixed in issue in Phi MoE, but it changes the test outputs a bit. Fix this.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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• Did you write any new necessary tests?

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Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
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[OlivierDehaene]

Thanks!